10 Vạn Câu Hỏi Vì Sao - Bí Ẩn Quanh Ta (Mai Vinh)

["Khi ch\u1ebf t\u1ea1o s\u1ee3i t\u1ed5ng h\u1ee3p, c\u00e1c nh\u00e0 h\u00f3a h\u1ecdc s\u1eafp x\u1ebfp c\u00e1c nguy\u00ean t\u00f4\\\" cacbon, hy\u0111r\u00f4, \u00f4xy v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c \u0111\u1ec3 h\u00ecnh th\u00e0nh m\u1ed9t ch\u1ea5t m\u1edbi. Nguy\u00ean li\u1ec7u ch\u1ebf t\u1ea1o s\u1ee3i t\u00f4ng h\u1ef1p l\u00e0 than, d\u1ea7u m\u1ecf, kh\u00f4ng kh\u00ed v\u00e0 n\u01b0\u1edbc. Nguy\u00ean t\u1eed trong c\u00e1c nguv\u00ean li\u1ec7u d\u00f3 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp trong c\u00e1c chu\u1ed7i ph\u00e2n t\u1eed d\u00e0i, lo\u1ea1i chu\u1ed7i n\u00e0y g\u1ecdi l\u00e0 ch\u00e1t t\u00f4ng h\u1ee3p. N\u00f3i c\u00e1ch kh\u00e1c, t\u00e1c d\u1ee5ng t\u1ed5ng h\u1ee3p n\u00e0y l\u00e0 do c\u00e1c nh\u00e0 h\u1ecfa h\u1ecdc d\u00f9ng bi\u1ec7n ph\u00e1p nh\u00e2n t\u1ea1o l\u00e0m ra ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ea3n ph\u1ea9m sinh ra m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean. Lo\u1ea1i chc\u00edt t\u1ed5ng h\u1ee3p \u0111\u00f3 khi b\u1ecb nung n\u00f3ng th\u00ec s\u1ebd ch\u1ea3y ra. Ng\u01b0\u1eddi ta n\u1ea5u ch\u00fang v\u00e0 d\u00fac th\u00e0nh nh\u1eefng t\u00e1ng ch\u1ea5t d\u1ebbo l\u1edbn ho\u1eb7c m\u00e0ng m\u1ecfng, c\u0169ng c\u00f3 th\u1ec3 \u00e9p th\u00e0nh s\u1ee3i (d\u00f9ng m\u1ed9t mi\u1ec7ng \u1ed1ng c\u00f3 nhi\u1ec1u l\u1ed7 nh\u1ecf, \u00e9p ch\u00e2\\\"t d\u1ebbo l\u1ecfng qua c\u00e1c l\u1ed7 \u0111\u00f3). S\u1ee3i t\u1ed5ng h\u1ee3p c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 d\u1ec7t th\u00e0nh v\u1ea3i. S\u1ee3i t\u1ed5ng h\u1ee3p chi\u1ebfm kho\u1ea3ng 1\/5 t\u1ed5ng s\u1ed1 s\u1ee3i \u0111\u01b0\u1ee3c s\u1ea3n xu\u00e2\\\"t tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. S\u1eefa b\u00f9 c\u00f3 nh\u1eefng th\u00e0nh ph\u1ea9n n\u00fac? Nhi\u1ec1u ng\u01b0\u1eddi cho r\u1eb1ng s\u1eefa b\u00f2 l\u00e0 lo\u1ea1i th\u1ee9c \u0103n g\u1ea7n nh\u01b0 ho\u00e0n h\u1ea3o nh\u1ea5t, c\u00f3 th\u1ec3 cung c\u00e2p c\u00e1c ch\u00e1t h\u1eefu \u00edch cho c\u01a1 th\u1ec3. Trong s\u1eefa b\u00f2 c\u00f3 ch\u1ea5t anbumin \u0111\u00ea t\u0103ng c\u01b0\u1eddng v\u00e0 ph\u1ee5c h\u1ed3i c\u01a1 b\u1eafp. M\u1ed9t th\u00e0nh B\u00cd \u1ea9n quanh ta 151 https:\/\/thuviensach.vn","ph\u1ea7n quan tr\u1ecdng kh\u00e1c c\u1ee7a s\u1eefa b\u00f2 l\u00e0 m\u1ee1, c\u00f3 th\u1ec3 cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho c\u01a1 th\u1ec3. M\u1ee1 trong s\u1eefa b\u00f2 g\u1ecdi l\u00e0 \\\"b\u01a1\\\". Trong s\u1eefa b\u00f2 c\u00f2n c\u00f3 \u0111\u01b0\u1eddng, l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t cacbua - hy\u0111r\u00f4, c\u00f3 th\u1ec3 cung c\u00e3p n\u0103ng l\u01b0\u1ee3ng. \u0110\u01b0\u1eddng trong s\u1eefa b\u00f2 l\u00e0 nh\u0169 \u0111\u01b0\u1eddng, \u0111\u1ed9 ng\u1ecdt k\u00e9m \u0111\u01b0\u1eddng m\u00eda, nh\u01b0ng c\u01a1 th\u1ec3 ng\u01b0\u1eddi l\u1ea1i d\u1ec5 d\u00e0ng h\u1ea5p thu nh\u1ea5t. S\u1eefa c\u00f2n c\u00f3 th\u1ec3 cung c\u1ea5p nh\u1eefng kho\u00e1ng ch\u1ea5t quan tr\u1ecdng cho c\u01a1 th\u1ec3, d\u00f9ng \u0111\u1ec3 t\u1ea1o ra x\u01b0\u01a1ng v\u00e0 m\u00e1u. Trong \u0111\u00f3, kho\u00e1ng ch\u00e2l nhi\u1ec1u nh\u1ea5t l\u00e0 canxi v\u00e0 ph\u1ed1tpho. Canxi trong s\u1eefa b\u00f2 nhi\u1ec1u h\u01a1n trong b\u1ea5t k\u1ef3 m\u1ed9t lo\u1ea1i th\u1ee9c \u0103n n\u00e0o. 152 https:\/\/thuviensach.vn","Trong s\u1eefa b\u00f2 c\u00f2n c\u00f3 c\u00e1c kho\u00e1ng ch\u1ea5t kh\u00e1c nh\u01b0 s\u1eaft, \u0111\u1ed3ng, mangan, magie, natri, kali, clo, iot, c\u00f4ban v\u00e0 k\u1ebdm. S\u1eefa b\u00f2 c\u00f2n cung c\u1ea5p cho ch\u00fang ta r\u1ea5t nhi\u1ec1u lo\u1ea1i vitamin, vitamin A v\u00e0 vitamin D, B\u1ecb, B2. D\u0129 nhi\u00ean s\u1eefa b\u00f2 c\u00f2n ch\u1ee9a nhi\u1ec1u n\u01b0\u1edbc. \u0110i\u1ec1u l\u00e0m ta ng\u1ea1c nhi\u00ean l\u00e0 trong m\u1ed9t l\u00edt s\u1eefa b\u00f2 c\u00f3 t\u1edbi 100 gam th\u1ee9c \u0103n th\u1ec3 r\u1eafn! Som r\u00ed\u1ee7g\u00ec? Tr\u01b0\u1edbc h\u1ebft ta h\u00e3y xem x\u00e9t ti\u1ebfng d\u1ed9i l\u1ea1i (\u00e2m thanh ph\u1ea3n x\u1ea1) l\u00e0 g\u00ec? Khi \u00e2m thanh b\u1ecb m\u1ed9t v\u1eadt th\u1ec3 l\u1edbn ph\u1ea3n x\u1ea1 l\u1ea1i, \u00e2m thanh d\u1ed9i ng\u01b0\u1ee3c tr\u1edf l\u1ea1i \u0111\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ti\u1ebfng v\u1ecdng. T\u00edn hi\u1ec7u \u00e2m thanh v\u00f4 tuy\u1ebfn \u0111i\u1ec7n b\u1ecb v\u1eadt th\u1ec3 ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i g\u1ecdi l\u00e0 \u00e2m thanh v\u00f4 tuy\u1ebfn d\u1ed9i l\u1ea1i. Thi\u1ebft b\u1ecb ph\u00e1t ho\u1eb7c thu t\u00edn hi\u1ec7u \u00e2m thanh v\u00f4 tuy\u1ebfn d\u1ed9i l\u1ea1i c\u00f2n g\u1ecdi l\u00e0 ra \u0111a. Ra \u0111a c\u00f3 th\u1ec3 ph\u00e1t ra t\u00edn hi\u1ec7u v\u00f4 tuy\u1ebfn, t\u00edn hi\u1ec7u n\u00e0y qua anten b\u1ee9c x\u1ea1 v\u00e0o kh\u00f4ng trung. Khi t\u00edn hi\u1ec7u v\u00f4 tuy\u1ebfn ch\u1ea1m v\u00e0o m\u1ed9t v\u1eadt th\u1ec3 th\u00ec m\u1ed9t ph\u1ea7n t\u00edn hi\u1ec7u \u0111\u00f3 b\u1ecb ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i anten v\u00e0 ra \u0111a. Ra \u0111a nh\u1eadn \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u \u00e2m thanh d\u1ed9i l\u1ea1i, v\u00e0 c\u00f3 th\u1ec3 bi\u1ebfn t\u00edn hi\u1ec7u \u0111\u00f3 th\u00e0nh h\u00ecnh \u1ea3nh. Sonar l\u00e0 t\u00ean vi\u1ebft t\u1eaft nh\u1eefng ch\u1eef c\u00e1i \u0111\u1ea7u c\u1ee7a Ti\u1ebfng Anh \\\"Sound Navigation Ranging\\\" ngh\u0129a l\u00e0 \\\"d\u1eabn \u0111\u01b0\u1eddng v\u00e0 \u0111o c\u1ef1 ly b\u1eb1ng s\u00f3ng \u00e2m thanh\\\", n\u00f3 r\u1ea5t g\u1ea7n v\u1edbi ra \u0111a. Thi\u1ebft b\u1ecb sonar d\u00f9ng s\u00f3ng \u00e2m thanh d\u1ed9i l\u1ea1i \u0111\u1ec3 d\u00f2 t\u00ecm v\u00e0 B\u00cd \u1ea9n quanh ta 153 https:\/\/thuviensach.vn","x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a m\u1ed9t v\u1eadt \u1edf d\u01b0\u1edbi n\u01b0\u1edbc. V\u00ec t\u00edn hi\u1ec7u v\u00f4 tuv\u1ebfn khi truy\u1ec1n trong n\u01b0\u1edbc kh\u00f4ng \u0111i \u0111\u01b0\u1ee3c xa n\u00ean ng\u01b0\u1eddi ta thay n\u00f3 b\u1eb1ng t\u00edn hi\u1ec7u \u00e2m thanh sonar. So v\u1edbi \u00e2m thanh b\u00ecnh th\u01b0\u1eddng, t\u00edn hi\u1ec7u \u00e2m thanh c\u1ee7a sonar m\u1ea1nh h\u01a1n r\u1ea5t nhi\u1ec1u. Ph\u1ea7n l\u1edbn c\u00e1c thi\u1ebft b\u1ecb sonar c\u00f3 th\u1ec3 ph\u00e1t ra nh\u1eefng \u00e2m thanh rru\u1ea1nh g\u1ea5p h\u00e0ng tri\u1ec7u l\u1ea7n ti\u1ebfng g\u00e0o c\u1ee7a ng\u01b0\u1eddi. T\u00edn hi\u1ec7u do sonar ph\u00e1t ra l\u00e0 lo\u1ea1i t\u00edn hi\u1ec7u xung, c\u1ee9 c\u00e1ch m\u1ed9t th\u1eddi gian gi\u00e3n c\u00e1ch (kho\u1ea3ng 1 ph\u1ea7n m\u1ea5y c\u1ee7a 1 gi\u00e2y) th\u00ec sonar l\u1ea1i ph\u00e1t ra m\u1ed9t t\u00edn hi\u1ec7u xung. M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb sonar ph\u00e1t ra t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 nghe th\u1ea5y. M\u1ed9t s\u00f4 t\u00edn hi\u1ec7u sonar l\u1ea1i r\u1ea5t gi\u1ed1ng ti\u1ebfng c\u00f2i g\u1ecdi ch\u00f3, c\u00f3 t\u1ea7n s\u1ed1 r\u1ea5t cao trong d\u1ea3i t\u1ea7n s\u1ed1 \u00e2m thanh, tai ng\u01b0\u1eddi kh\u00f4ng th\u1ec3 nghe th\u00e2y (nh\u01b0ng ch\u00f3 th\u00ec nghe th\u1ea5y). Trong thi\u1ebft b\u1ecb sonar c\u00f3 m\u1ed9t m\u00e1y thu \u0111\u1eb7c bi\u1ec7t, c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c \u00e2m thanh d\u1ed9i l\u1ea1i (ph\u1ea3n x\u1ea1) c\u1ee7a lo\u1ea1i \u00e2m thanh t\u1ea7n s\u1ed1 cao \u0111\u00f3. Ng\u01b0\u1eddi ta d\u00f9ng \u00e2m thanh ph\u1ea3n x\u1ea1 n\u00e0y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a v\u1eadt th\u00ea \u1eed d\u01b0\u1edbi n\u01b0\u1edbc (th\u00ed d\u1ee5 t\u00e0u ng\u1ea7m). Thi\u1ebft b\u1ecb sonar c\u00f2n d\u00f9ng \u0111\u1ec3 th\u0103m d\u00f2 m\u1ecf d\u1ea7u tr\u00ean \u0111\u1ea5t li\u1ec1n. N\u00f3 ph\u00e1t t\u00edn hi\u1ec7u xung xu\u1ed1ng d\u01b0\u1edbi \u0111\u1ea5t, \u00e2m thanh ph\u1ea3n x\u1ea1 \u0111\u01b0\u1ee3c truy\u1ec1n tr\u1edf l\u1ea1i t\u1eeb c\u00e1c t\u1ea7ng \u0111\u00e1 kh\u00e1c nhau, gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u1edf c\u00e1c m\u1ea1ch n\u01b0\u1edbc ng\u1ea7m s\u00e2u d\u01b0\u1edbi \u0111\u1ea5t c\u00f3 th\u1ec3 c\u00f3 nh\u1eefng v\u1ec9a d\u1ea7u m\u1ecf \u1ea9n gi\u1ea5u d\u01b0\u1edbi \u0111\u00f3. 154 https:\/\/thuviensach.vn","V\u00ec sac c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng \\\"ma ch\u01a1i7 S\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a nh\u1eefng qu\u1ea3 c\u1ea7u \u00e1nh s\u00e1ng k\u1ef3 l\u1ea1, bay li\u1ec7ng ph\u00eda tr\u00ean b\u1ea7u tr\u1eddi nh\u01b0 \u0111\u00e3 tr\u1edf th\u00e0nh c\u00e2u h\u1ecfi h\u00f3c b\u00faa \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 khoa h\u1ecdc su\u1ed1t nhi\u1ec1u n\u0103m qua. Tuy nhi\u00ean, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u tuy\u00ean b\u1ed1 v\u1eeba gi\u1ea3i m\u00e3 \u0111\u01b0\u1ee3c b\u00ed \u1ea9n n\u00e0y. \u0110\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ean g\u1ecdi \\\"hi\u1ec7n t\u01b0\u1ee3ng Hessdalen\u201d, c\u00e1c qu\u1ea3 c\u1ea7u \\\"ma ch\u01a1i\\\" c\u00f3 th\u1ec3 to t\u1edbi k\u00edch th\u01b0\u1edbc c\u1ee7a xe h\u01a1i v\u00e0 th\u1eadm ch\u00ed thu h\u00fat s\u1ef1 ch\u00fa \u00fd c\u1ee7a c\u00e1c th\u1ee3 s\u0103n UFO. M\u1ed9t v\u00e0i trong s\u1ed1 nh\u1eefng qu\u1ea3 c\u1ea7u \u00e1nh s\u00e1ng k\u1ef3 l\u1ea1 \u0111\u00f3 tr\u00f4i n\u1ed5i nh\u1eb9 nh\u00e0ng qua b\u1ea7u tr\u1eddi su\u1ed1t g\u1ea7n 2 ti\u1ebfng, trong khi s\u1ed1 c\u00f2n l\u1ea1i l\u1eadp l\u00f2e \u00e1nh s\u00e1ng tr\u1eafng ho\u1eb7c xanh d\u01b0\u01a1ng, d\u1ecbch chuy\u1ec3n r\u1ea5t nhanh qua thung l\u0169ng v\u00e0 bi\u1ebfn m\u1ea5t trong v\u00f2ng v\u00e0i gi\u00e2y. Erling Strand, m\u1ed9t k\u1ef9 s\u01b0 m\u00e1y t\u00ednh thu\u1ed9c \u0110\u1ea1i h\u1ecdc Ost\u00edold (Na Uy), \u0111\u00e3 t\u00ecm ki\u1ebfm c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt l\u00fd \u1ea9n sau hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 nhi\u00ean n\u00f3i tr\u00ean k\u1ec3 t\u1eeb n\u0103m 1982, khi c\u00e1c m\u00e0n tr\u00ecnh di\u1ec5n th\u01b0\u1eddng xuy\u00ean c\u1ee7a \u00e1nh s\u00e1ng \\\"ma ch\u01a1i\\\" thu h\u00fat s\u1ef1 quan t\u00e2m B\u00cd \u1ea9n quanh ta 155 https:\/\/thuviensach.vn","c\u1ee7a c\u1ea3 b\u00e1o ch\u00ed v\u00e0 gi\u1edbi khoa h\u1ecdc. \u00d4ng Strand \u0111\u00e3 x\u00e2y d\u1ef1ng D\u1ef1 \u00e1n Hessdalen trong m\u1ed9t n\u1ed7 l\u1ef1c nh\u1eb1m quy t\u1ee5 c\u00e1c chuy\u00ean gia \u0111ang c\u1ed1 g\u1eafng gi\u1ea3i \u0111\u00e1p c\u00e1ch h\u00ecnh th\u00e0nh c\u00e1c qu\u1ea3 c\u1ea7u \u00e1nh s\u00e1ng b\u00ed \u1ea9n, c\u1ee7ng nh\u01b0 nhanh ch\u00f3ng b\u00e1c b\u1ecf nh\u1eefng gi\u1ea3 thuy\u1ebft cho r\u1eb1ng, \u00e1nh s\u00e1ng b\u1eaft ngu\u1ed3n t\u1eeb m\u00e1y bay, c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng ho\u1eb7c t\u00f2a nh\u00e0. Nh\u01b0ng th\u1ef1c ch\u00e2T \u0111\u00f3 ch\u00ednh l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \\\"ma ch\u01a1i' nh\u01b0 m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng th\u00e2y. M\u00e0ng ti\u00ean c\u00e1 c\u00f3 th\u1ef1c s\u1ef1 t\u00e2n t\u1ea1i? N\u1ebfu ai \u0111\u00e3 t\u1eebng \u0111\u1ecdc truy\u1ec7n c\u1ed5 t\u00edch Andersen h\u1eb3n s\u1ebd bi\u1ebft \u0111\u1ebfn c\u00e2u chuy\u1ec7n c\u1ea3m \u0111\u1ed9ng v\u1ec1 N\u00e0ng ti\u00ean c\u00e1 xinh d\u1eb9p. Nhi\u1ec1u ng\u01b0\u1eddi cho r\u1eb1ng, N\u00e0ng ti\u00ean c\u00e1 \u0111\u01a1n thu\u1ea7n ch\u1ec9 l\u00e0 nh\u00e2n v\u1eadt h\u01b0 c\u1ea5u v\u00e0 kh\u00f4ng c\u00f3 th\u1eadt. Tuy nhi\u00ean, c\u00f3 kh\u00e1 nhi\u1ec1u b\u1eb1ng ch\u1ee9ng \u0111\u01b0\u1ee3c \u0111\u01b0a ra ch\u1ee9ng minh N\u00e0ng ti\u00ean c\u00e1 l\u00e0 c\u00f3 th\u1eadt. Sinh v\u1eadt c\u00f3 m\u1ed9t n\u1eeda h\u00ecnh d\u00e1ng gi\u1ed1ng con ng\u01b0\u1eddi (\u0111\u01b0\u1ee3c g\u1ecdi chung l\u00e0 chimera) c\u0169ng t\u1eebng \\\"l\u00e0m m\u01b0a l\u00e0m gi\u00f3\\\" trong r\u1ea5t nhi\u1ec1u c\u00e2u chuy\u1ec7n th\u1ea7n tho\u1ea1i, truy\u1ec1n thuy\u1ebft. V\u00e0 k\u1ec3 t\u1eeb n\u0103m 1403, vi\u1ec7c ph\u00e1t hi\u1ec7n ra kh\u00f4ng \u00edt x\u00e1c \u01b0\u1edbp ng\u01b0\u1eddi c\u00e1 l\u1ea1i c\u00e0ng khi\u1ebfn gi\u1edbi kh\u1ea3o c\u1ed5 h\u1ecdc tr\u00ean th\u1ebf gi\u1edbi v\u00f4 c\u00f9ng b\u1ed1i r\u1ed1i. Nh\u1eefng truy\u1ec1n thuy\u1ebft \u0111\u1ea7u ti\u00ean c\u1ee7a N\u00e0ng ti\u00ean c\u00e1 c\u00f3 ngu\u1ed3n g\u1ed1c kho\u1ea3ng 1.000 n\u0103m Tr\u01b0\u1edbc c\u00f4ng nguy\u00ean - c\u00e2u chuy\u1ec7n k\u1ec3 v\u1ec1 n\u1eef th\u1ea7n Syria nh\u1ea3y xu\u1ed1ng h\u1ed3 \u0111\u1ec3 156 https:\/\/thuviensach.vn","bi\u1ebfn th\u00e0nh m\u1ed9t con c\u00e1. Tuy nhi\u00ean, v\u1ebb \u0111\u1eb9p tuy\u1ec7t v\u1eddi c\u1ee7a Syria \u0111\u00e3 kh\u00f4ng th\u1ec3 bi\u1ebfn ho\u00e0n to\u00e0n th\u00e0nh c\u00e1 m\u00e0 ch\u1ec9 c\u00f3 n\u1eeda d\u01b0\u1edbi bi\u1ebfn \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u00f4i. K\u1ec3 t\u1eeb \u0111\u00f3, nhi\u1ec1u n\u1ec1n v\u0103n h\u00f3a kh\u00e1c nhau tr\u00ean th\u1ebf gi\u1edbi c\u00f9ng t\u1ea1o ra c\u00e1c c\u00e2u chuy\u1ec7n v\u1ec1 sinh v\u1eadt k\u1ef3 l\u1ea1 n\u00e0y. Trong su\u1ed1t l\u1ecbch s\u1eed, c\u00e1c nh\u00e0 th\u00e1m hi\u1ec3m c\u0169ng cho bi\u1ebft h\u1ecd nh\u00ecn th\u00e2y N\u00e0ng ti\u00ean c\u00e1, n\u1ed5i ti\u1ebfng nh\u1ea5t trong s\u1ed1 \u0111\u00f3 l\u00e0 Christopher Columbus. Columbus tuy\u00ean b\u00f4\\\" nh\u00ecn th\u00e2y N\u00e0ng ti\u00ean c\u00e1 g\u1ea7n Haiti v\u00e0o n\u0103m 1493 v\u00e0 m\u00f4 t\u1ea3 r\u1eb1ng \\\"N\u00e0ny ti\u00ean c\u00e1 kh\u00f4ng xinh \u0111\u1eb9p nh\u01b0 truy\u1ec1n thuy\u1ebft, khu\u00f4n m\u1eb7t c\u1ee7a N\u00e0ng tr\u00f4ng gi\u00f4ng nam gi\u1edbi nhi\u1ec1u h\u01a1n\\\". v\u1eabn c\u00f2n r\u1ea5t nhi\u1ec1u b\u1eb1ng ch\u1ee9ng kh\u00e1c ch\u1ec9 ra s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a N\u00e0ng ti\u00ean c\u00e1 c\u1ee7ng nh\u01b0 nhi\u1ec1u h\u00f3a th\u1ea1ch c\u00f3 h\u00ecnh d\u00e1ng c\u1ee7a \\\"m\u1ef9 nh\u00e2n ng\u01b0\u201d. Tuy nhi\u00ean, nh\u00f3m chuy\u00ean gia NOAA x\u00e1c nh\u1eadn: \u0110\u1ee7ng l\u00e0 c\u00f3 kh\u00f4ng \u00edt nh\u00e0 khoa h\u1ecdc tin t\u01b0\u1edfng v\u00e0o gi\u1ea3 thuy\u1ebft cho r\u1eb1ng, t\u1ed5 ti\u00ean lo\u00e0i ng\u01b0\u1eddi t\u1eebng l\u00e0 m\u1ed9t sinh v\u1eadt s\u00f4ng d\u01b0\u1edbi bi\u1ec3n nh\u01b0ng hi\u1ec7n t\u1ea1i, c\u00e1c chuy\u00ean gia v\u1eabn chita t\u1eebng ghi nh\u1eadn b\u1ea5t k\u1ef3 b\u1eb1ng ch\u1ee9ng thuy\u1ebft ph\u1ee5c n\u00e0o li\u00ean quan \u0111\u1ebfn ngi\u00ed\u1eddi c\u00e1\\\". B\u00cd \u1ea9n quanh ta 157 https:\/\/thuviensach.vn","X\u00e1t bi\u1ec3t h\u00fat\\\" c\u00f3 \u0111\u00fang kh\u1ee7ng? Trong nhi\u1ec1u th\u1ebf k\u1ef7 qua, hi\u1ec7n t\u01b0\u1ee3ng m\u1ed9t s\u1ed1 v\u00f9ng sa m\u1ea1c tr\u00ean th\u1ebf gi\u1edbi ph\u00e1t ra th\u1ee9 \u00e2m thanh k\u1ef3 l\u1ea1 nghe nh\u01b0 nh\u1eefng b\u1ea3n nh\u1ea1c \u0111\u00e3 m\u00ea ho\u1eb7c bi\u1ebft bao du kh\u00e1ch v\u00e0 nh\u00e0 th\u00e1m hi\u1ec3m. Ng\u01b0\u1eddi x\u01b0a cho r\u1eb1ng \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0 ti\u1ebfng th\u00e9t c\u1ee7a qu\u1ef7 th\u1ea7n ch\u1ed1n \u0111\u1ecba ng\u1ee5c ho\u1eb7c l\u00e0 ti\u1ebfng h\u00e1t m\u00e0 n\u00e0ng ti\u00ean c\u00e1 c\u1ea5t l\u00ean nh\u1eb1m d\u1ee5 d\u1ed7 c\u00e1c th\u1ee7y th\u1ee7. Tuy nhi\u00ean, v\u1edbi khoa h\u1ecdc hi\u1ec7n \u0111\u1ea1i, ngu\u1ed3n g\u1ed1c th\u1ef1c s\u1ef1 c\u1ee7a n\u00f3 v\u1eabn l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi ch\u01b0a th\u1ec3 l\u00e0m r\u00f5. \u0110\u1ec3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi n\u00e0y, c\u00e1c chuy\u00ean gia nghi\u00ean c\u1ee9u \u00e2m thanh \u0111\u00e3 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m t\u1ea1i hai dim c\u00e1t kh\u00e1c nhau: m\u1ed9t \u1edf sa m\u1ea1c Sahara, ph\u00eda T\u00e2y Nam Mar\u00f4c v\u00e0 m\u1ed9t \u1edf g\u1ea7n Al- Askharah - th\u1ecb tr\u1ea5n ven bi\u1ec3n \u0110\u00f4ng Nam Oman, tr\u00ean b\u00e1n d\u1ea3o \u1ea2 R\u1eadp. K\u1ebft qu\u1ea3: t\u1ea1i Mar\u00f4c, nhi\u1ec1u b\u00e3i c\u00e1t t\u1ea1o ra t\u1ea7n s\u1ed1 \u0111\u1ec1u \u0111\u1ec1u \u1edf m\u1ee9c 105Hertz, trong khi \u1edf Oman \u0111\u00f4i khi l\u1ea1i xu\u1ea5t hi\u1ec7n th\u1ee9 \u00e2m t\u1ea1p ch\u00f3i tai v\u1edbi t\u1ea7n s\u1ed1 l\u00ean xu\u1ed1ng th\u1ea5t th\u01b0\u1eddng, t\u1eeb 90 \u0111\u1ebfn 150Hertz. Ngo\u00e0i ra, trong khi c\u00e1t \u1edf sa m\u1ea1c Mar\u00f4c c\u00f3 k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng \u0111\u1ed1i d\u1ed3ng \u0111\u1ec1u th\u00ec \u1edf Oman l\u1ea1i kh\u00f4ng. Ti\u1ebfn h\u00e0nh ph\u00e2n l\u1eadp nh\u1eefng h\u1ea1t k\u00edch c\u1ee1 kh\u00e1c nhau v\u00e0 ghi l\u1ea1i \u00e2m thanh khi ch\u00fang di chuy\u1ec3n qua kh\u00f4ng kh\u00ed trong ph\u00f2ng th\u00ed nghi\u1ec7m, c\u00e1c nh\u00e0 khoa h\u1ecdc k\u1ebft lu\u1eadn \\\"c\u00e1t bi\u1ebft h\u00e1t\\\" l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc v\u00e0 t\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u00e1t, t\u1ee9c l\u00e0 h\u1ea1t c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau s\u1ebd di chuy\u1ec3n \u1edf v\u1eadn t\u1ed1c kh\u00e1c nhau. 158 https:\/\/thuviensach.vn","Tuy nhi\u00ean, h\u1ecd v\u1eabn kh\u00f4ng hi\u1ec3u l\u00e0m th\u1ebf n\u00e0o chuy\u00ean \u0111\u1ed9ng th\u1ea5t th\u01b0\u1eddng l\u1ea1i c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p th\u00e0nh nh\u1eefng b\u1ea3n nh\u1ea1c kh\u00e1 m\u1ea1ch l\u1ea1c. Gi\u1ea3 thuy\u1ebft \u0111\u01b0\u1ee3c ch\u00e2'p nh\u1eadn r\u1ed9ng r\u00e3i ch\u00ednh l\u00e0 s\u1ef1 di chuy\u1ec3n c\u1ee7a hc\u1ecat c\u00e1t x\u1ea3y ra \u0111\u1ed3ng th\u1eddi, ho\u1eb7c dao \u0111\u1ed9ng \u1edf c\u00f9ng m\u1ed9t t\u1ea7n s\u1ed1. H\u00e0ng ng\u00e0n rung \u0111\u1ed9ng nh\u1ecf k\u1ebft h\u1ee3p d\u1ec5 d\u1eabn \u0111\u1ebfn s\u1ef1 ch\u1ea5n \u0111\u1ed9ng c\u1ee7a kh\u00f4ng kh\u00ed, t\u1eeb \u0111\u00f3 m\u00e0 ph\u00e1t ra \u00e2m thanh, t\u00e1c gi\u1ea3 ch\u00ednh Simon Dagois - Bohy cho bi\u1ebft. Truy\u1ec7n c\u1ed1 t\u00edch kh\u00f4ng ch\u1ec9 l\u00e0 t\u01b0\u1edfng t\u01b0\u1ee3ng? Tr\u1ebb em tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi \u0111\u1ec1u y\u00eau th\u00edch truy\u1ec7n c\u1ed5 t\u00edch. Nh\u1eefng c\u00e2u chuy\u1ec7n c\u00f3 c\u1ed1t truy\u1ec7n g\u1eafn li\u1ec1n v\u1edbi ph\u00e9p thu\u1eadt v\u00e0 ma qu\u1ef7, c\u00e1c ch\u00e0ng ho\u00e0ng t\u1eed \u0111\u1eb9p trai v\u00e0 c\u00e1c n\u00e0ng c\u00f4ng ch\u00faa ho\u1eb7c thi\u1ebfu n\u1eef xinh d\u1eb9p, lu\u00f4n kh\u01a1i g\u1ee3i tr\u00ed t\u01b0\u1edfng t\u01b0\u1ee3ng phong ph\u00fa v\u00e0 cu\u1ed1n b\u1ecdn tr\u1ebb v\u00e0o th\u1ebf gi\u1edbi th\u1ea7n ti\u00ean. D\u1eabu v\u1eady, \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi l\u1edbn, h\u1ea7u h\u1ebft truy\u1ec7n c\u1ed5 t\u00edch d\u01b0\u1eddng nh\u01b0 phi th\u1ef1c t\u1ebf v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean b\u1ea5t k\u1ef3 n\u1ec1n t\u1ea3ng s\u1ef1 th\u1eadt n\u00e0o. Tuy nhi\u00ean, n\u1ebfu nh\u00ecn truy\u1ec7n c\u1ed5 t\u00edch d\u01b0\u1edbi l\u0103ng k\u00ednh khoa h\u1ecdc, ch\u00fang ta c\u00f3 th\u1ec3 nh\u1eadn th\u00e2y m\u1ed9t v\u00e0i trong s\u1ed1 ch\u00fang kh\u00f4ng h\u1eb3n l\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a tr\u00ed t\u01b0\u1edfng t\u01b0\u1ee3ng. Qu\u1ea3 t\u00e1o \u0111\u1ed9c trong truy\u1ec7n \\\"N\u00e0ng B\u1ea1ch Tuy\u1ebft v\u00e0 7 ch\u00fa l\u00f9n\\\", c\u00f4ng ch\u00faa B\u1ea1ch Tuy\u1ebft c\u1eafn m\u1ed9t qu\u1ea3 t\u00e1o B\u00cd \u1ea9n quanh ta 159 https:\/\/thuviensach.vn","v\u00e0 l\u1eadp t\u1ee9c ng\u00e3 l\u0103n b\u1ea5t t\u1ec9nh, r\u1ed3i ch\u1ec9 t\u1ec9nh d\u1eady nh\u1edd n\u1ee5 h\u00f4n c\u1ee7a ng\u01b0\u1eddi y\u00eau \u0111\u00edch th\u1ef1c - ch\u00e0ng ho\u00e0ng t\u1eed \u0111\u1eb9p trai. C\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 m\u1ed9t c\u00e1ch l\u00fd gi\u1ea3i \u0111\u01a1n gi\u1ea3n cho gi\u00e2c ng\u1ee7 d\u00e0i, t\u1ea1m th\u1eddi c\u1ee7a B\u1ea1ch Tuy\u1ebft. \u0110\u00f3 ch\u00ednh l\u00e0 vi khu\u1ea9n Listeria monocytogenesis. \u0110\u00e2y l\u00e0 m\u1ed9t lo\u1ea1i vi khu\u1ea9n h\u00ecnh que, tr\u00fa ng\u1ee5 trong nhi\u1ec1u lo\u1ea1i th\u1ef1c ph\u1ea9m, k\u1ec3 c\u1ea3 t\u00e1o. \\\"N\u00f3 g\u00e2y ra b\u1ec7nh vi\u00eam m\u00e0ng n\u00e3o v\u00e0 th\u01b0\u1eddng l\u00e0 h\u1ed9i \u0111\u1ee7 kh\u1ea3 n\u0103ng g\u00e2y r\u1ed1i lo\u1ea1n, cho\u00e1ng s\u1ed1c \u0111\u1ec3 d\u1eabn t\u1edbi t\u00ecnh tr\u1ea1ng h\u00f4n m\u00ea \u1edf ng\u01b0\u1eddi\\\" - Ti\u1ebfn s\u0129 George Thompson, ph\u00f3 160 https:\/\/thuviensach.vn","gi\u00e1o s\u01b0 chuy\u00ean ng\u00e0nh d\u01b0\u1ee3c thu\u1ed9c D\u1ea1i h\u1ecdc Calitornia (M\u1ef9) cho bi\u1ebft. Kh\u00e1c v\u1edbi truy\u1ec7n c\u00f4 t\u00edch, ngo\u00e0i \u0111\u1eddi th\u1ef1c, ch\u00fang ta kh\u00f4ng ch\u00ed c\u1ea7n n\u1ee5 h\u00f4n \u0111\u00ea l\u00e0m th\u1ee9c t\u1ec9nh ng\u01b0\u1eddi b\u1ecb h\u00f4n m\u00ea do vi\u00eam m\u00e0ng n\u00e3o, tr\u1eeb phi n\u1ee5 h\u00f4n \u0111\u00f3, b\u0103ng c\u00e1ch n\u00e0o \u0111\u00f3, th\u1ea5m \u0111\u1eabm m\u1ed9t li\u1ec1u kh\u00e1ng sinh n\u1eb7ng. Tuy nhi\u00ean, n\u1ee5 h\u00f4n c\u1ee7a t\u00ecnh y\u00eau ch\u00e2n th\u1eadt c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o n\u00ean ph\u00e9p m\u00e0u. N\u0103m 2009, m\u1ed9t ph\u1ee5 n\u1eef \u1edf Anh b\u1ecb r\u01a1i v\u00e0o tr\u1ea1ng th\u00e1i h\u00f4n m\u00ea sau m\u1ed9t c\u01a1n dau tim. C\u00f4 ch\u1ec9 c\u1ef1a qu\u1eady 2 tu\u1ea7n sau \u0111\u00f3 khi ng\u01b0\u1eddi ch\u1ed3ng \u0111au kh\u1ed5 c\u1ea7u xin v\u1ee3 m\u1ed9t n\u1ee5 h\u00f4n. V\u00e0 ng\u01b0\u1eddi v\u1ee3 d\u01b0\u1eddng nh\u01b0 \u0111\u00e1p t\u1eeb b\u1eb1ng c\u00e1ch quay \u0111\u1ea7u l\u1ea1i v\u00e0 chu m\u00f4i s\u1eb5n s\u00e0ng h\u00f4n, theo t\u1edd Daily Mail. Hay qu\u00e1i v\u1eadt v\u00e0 ng\u01b0\u1eddi s\u00f3i c\u0169ng v\u1eady: Th\u1ebf gi\u1edbi c\u1ed5 t\u00edch \u0111\u1ea7y r\u1eaby c\u00e1c v\u00ed d\u1ee5 v\u1ec1 nh\u1eefng sinh v\u1eadt gi\u1ed1ng nh\u01b0 ng\u01b0\u1eddi s\u00f3i, v\u00ed d\u1ee5 nh\u01b0 nh\u00e2n v\u1eadt Qu\u00e1i v\u1eadt trong truy\u1ec7n \\\"Ng\u01b0\u1eddi \u0111\u1eb9p v\u00e0 Qu\u00e1i v\u1eadt\\\" hay ch\u00f3 s\u00f3i trong truv\u1ec7n c\u1ed5 t\u00edch \\\"C\u00f4 b\u00e9 qu\u00e0ng kh\u0103n \u0111\u1ecf\\\". Tuy nhi\u00ean, nh\u1eefng ng\u01b0\u1eddi s\u00f3i \u0111\u00e1ng s\u1ee3 n\u00e0y c\u00f3 th\u1ec3 ch\u1ec9 l\u00e0 n\u1ea1n nh\u00e2n b\u1ea5t h\u1ea1nh c\u1ee7a m\u1ed9t c\u0103n b\u1ec7nh nan y. Hypertrichosis hay g\u1ecdi n\u00f4m na l\u00e0 \\\"h\u1ed9i ch\u1ee9ng ng\u01b0\u1eddi s\u00f3i\\\" \u0111\u1eb7c tr\u01b0ng b\u1eb1ng s\u1ef1 xu\u1ea5t hi\u1ec7n qu\u00e1 m\u1ee9c c\u1ee7a l\u00f4ng tr\u00ean to\u00e0n b\u1ed9 ho\u1eb7c ch\u00ec m\u1ed9t s\u1ed1 v\u00f9ng nh\u00e2t \u0111\u1ecbnh tr\u00ean c\u01a1 th\u1ec3. \u0110\u00f4i khi m\u1ed9t ng\u01b0\u1eddi sinh ra \u0111\u00e3 \u0111\u1ea7y l\u00f4ng l\u00e1 v\u00ec \u0111\u1ed9t bi\u1ebfn gen hi\u1ebfm g\u1eb7p. Trong khi \u0111\u00f3, s\u00f4 kh\u00e1c c\u00f3 th\u1ec3 m\u1eafc \\\"h\u1ed9i ch\u1ee9ng ng\u01b0\u1eddi s\u00f3i\\\" khi l\u1edbn l\u00ean B\u00cd \u1ea9n qhuttapns:h\/\/thtauvien1s6a1ch.vn","do t\u00e1c d\u1ee5ng ph\u1ee5 c\u1ee7a m\u1ed9t s\u00f4 lo\u1ea1i thu\u1ed1c ho\u1eb7c h\u1ecfa ch\u00e1t nh\u1ea5t \u0111\u1ecbnh hay th\u1eadm ch\u00ed c\u1ea3 c\u00e1c b\u1ec7nh ung th\u01b0. Tr\u01b0\u1eddng h\u1ee3p m\u1eafc \\\"h\u1ed9i ch\u1ee9ng ng\u01b0\u1eddi s\u00f3i\\\" \u0111\u1ea7u ti\u00ean d\u01b0\u1ee3c ghi nh\u1eadn tr\u00ean th\u1ebf gi\u1edbi thu\u1ed9c v\u1ec1 gia \u0111\u00ecnh Gonzales \u1edf qu\u1ea7n \u0111\u1ea3o Canary v\u00e0o nh\u1eefng n\u0103m 1600. C\u0103n b\u1ec7nh l\u1ea1 xu\u00e2d hi\u1ec7n \u1edf c\u1ea3 \u00f4ng Petrus Gonzales, 2 con g\u00e1i, c\u1eadu con trai v\u00e0 ch\u00e1u trai c\u1ee7a \u00f4ng. \u0110\u1ebfn th\u1ebf k\u1ef7 XIX, nh\u1eefng ng\u01b0\u1eddi m\u1eafc ch\u1ee9ng Hypertrichosis nh\u01b0 Jo-Jo \\\"c\u1eadu b\u00e9 m\u1eb7t ch\u00f3\\\", Lionel \\\"ng\u01b0\u1eddi \u0111\u00e0n \u00f4ng m\u1eb7t su' t\u1eed\\\"v\u00e0 \\\"qu\u00fd b\u00e0 r\u00e2u ria\\\" \u0111\u1ec1u tr\u1edf th\u00e0nh ng\u00f4i sao trong c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh bi\u1ec3u di\u1ec5n c\u1ee7a g\u00e1nh xi\u1ebfc do s\u1ee9c thu h\u00fat s\u1ef1 t\u00f2 m\u00f2 c\u1ee7a m\u1ecdi ng\u01b0\u1eddi. N\u00e0ngMcna L\u1ec9sa c\u00f3 ch\u1ecb em kh\u00f9ng? C\u00e1c chuy\u00ean gia ngh\u1ec7 thu\u1eadt t\u1ea1i Th\u1ee5y S\u1ef9 \u0111\u00e3 n\u1eafm \u0111\u01b0\u1ee3c ch\u1ee9ng c\u1ee9 cho th\u1ea5y phi\u00ean b\u1ea3n b\u1ee9c h\u1ecda Mona Lisa \u0111\u1ea7u ti\u00ean c\u0169ng l\u00e0 m\u1ed9t t\u00e1c ph\u1ea9m c\u1ee7a Leonardo da Vinci. Trong h\u01a1n ba th\u1ebf k\u1ef7, b\u1ee9c Mona Lisa \u1edf b\u1ea3o t\u00e0ng Louvre t\u1ea1i Paris lu\u00f4n \u0111\u01b0\u1ee3c cho l\u00e0 b\u1ee9c h\u1ecda duy nh\u1ea5t v\u1ebd ng\u01b0\u1eddi m\u1eabu n\u00e0y c\u1ee7a h\u1ecda s\u0129 thi\u00ean t\u00e0i ng\u01b0\u1eddi \u00dd. Tuy nhi\u00ean, m\u1edbi \u0111\u00e2y, T\u1ed5 ch\u1ee9c Mona Lisa t\u1ea1i Zurich cho hay, c\u00e1c cu\u1ed9c ki\u1ec3m tra khoa h\u1ecdc v\u00e0 d\u1eef li\u1ec7u l\u1ecbch s\u1eed cung c\u00e2p th\u00eam nh\u1eefng ch\u1ee9ng c\u1ee9 thuy\u1ebft ph\u1ee5c \u1ee7ng h\u1ed9 tuycn b\u1ed1 tr\u01b0\u1edbc \u0111\u00f3 c\u1ee7a nh\u00f3m chuy\u00ean gia r\u1eb1ng, b\u1ee9c h\u1ecda Islevvorth Mona Lisa th\u1ef1c ch\u00e2t l\u00e0 https:\/\/thuviensach.vn","ch\u00e2n dung c\u1ee7a c\u00f9ng m\u1ed9t ph\u1ee5 n\u1eef \u0111\u00e3 h\u00f3a th\u00e0nh bi\u1ec3u t\u01b0\u1ee3ng b\u1ea5t t\u1eed trong t\u00e1c ph\u1ea9m v\u00f4 gi\u00e1 c\u1ee7a nh\u00e0 danh h\u1ecda Leonardo da Vinci. Theo Art Daily, Vi\u1ec7n C\u00f4ng ngh\u1ec7 Li\u00ean bang Th\u1ee5y S\u0129 t\u1ea1i Zurich, sau khi b\u1ee9c Islevvorth Mona Lisa \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 t\u1ea1i Geneva h\u1ed3i th\u00e1ng 9 n\u0103m ngo\u00e1i, \u0111\u00e3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh \u0111\u1ed3ng v\u1ecb cacbon tr\u00ean b\u1ee9c tranh Isleworth, v\u00e0 ph\u00e1t hi\u1ec7n n\u00f3 \u0111\u01b0\u1ee3c ho\u00e0n th\u00e0nh trong giai \u0111o\u1ea1n t\u1eeb n\u0103m 1410 \u0111\u1ebfn n\u0103m 1455. B\u00cd \u1ea9n quanh ta 163 https:\/\/thuviensach.vn","Trong khi \u0111\u00f3, b\u1ee9c Mona Lisa n\u00f4i ti\u1ebfng \u0111\u01b0\u1ee3c v\u1ebd v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 1500. Cu\u1ed9c nghi\u00ean c\u1ee9u ph\u00e2n t\u00edch n\u00e9t v\u1ebd tr\u01b0\u1edbc \u0111\u00f3 c\u1ee7a nh\u00e0 v\u1eadt l\u00fd h\u1ecdc ng\u01b0\u1eddi M\u1ef9 \u1ecaohn Asmus c\u1ee7ng \u0111\u00e3 k\u1ebft lu\u1eadn r\u1eb1ng b\u1ea3n Islevvorth v\u00e0 b\u1ea3n \u1edf Lourve l\u00e0 c\u00f9ng m\u1ed9t ng\u01b0\u1eddi v\u1ebd. \u0110i\u1ec1u n\u00e0y ch\u1ee9ng minh r\u1eb1ng, n\u00e0ng Mona Lisa c\u00f3 m\u1ed9t \\\"ch\u1ecb g\u00e1i\\\". M\u1ed9t chi\u1ebfc qu\u00e2n c\u00f3 th\u00ea t\u00f4n l\u1ea1i 3300 n\u0103m kh\u00f4ng? Vi\u1ec7n kh\u1ea3o c\u1ed5 \u0110\u1ee9c t\u1ea1i Berlin v\u1eeba khai qu\u1eadt \u0111\u01b0\u1ee3c m\u1ed9t qu\u1ea7n c\u1ed5, kh\u00e1 nguy\u00ean v\u1eb9n c\u00f3 ni\u00ean \u0111\u1ea1i 3.300 n\u0103m tu\u1ed5i t\u1ea1i khu m\u1ed9 Yanghai (Trung Qu\u1ed1c), \u0111\u01b0\u1ee3c cho l\u00e0 chi\u1ebfc qu\u1ea7n c\u1ed5 nh\u1ea5t hi\u1ec7n nay. C\u00e1c nh\u00e0 kh\u1ea3o c\u1ed5 h\u1ecdc cho r\u1eb1ng, qu\u1ea7n c\u1ed5 3.300 n\u0103m tu\u1ed5i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m m\u1ee5c \u0111\u00edch cho vi\u1ec7c c\u01b0\u1ee1i ng\u1ef1a. \u0110\u1ed9 tu\u1ed5i c\u1ee7a qu\u1ea7n c\u1ed5 n\u00e0y c\u0169ng t\u01b0\u01a1ng \u1ee9ng v\u1edbi th\u1eddi k\u00ec c\u01b0\u1ee1i ng\u1ef1a \u0111\u1ea7u ti\u00ean c\u1ee7a con ng\u01b0\u1eddi, c\u00e1ch \u0111\u00e2y kho\u1ea3ng 4.000 n\u0103m tr\u01b0\u1edbc. D\u1ed3ng th\u1eddi, v\u1ecb tr\u00ed t\u00ecm th\u1ea5y qu\u1ea7n c\u00f4 t\u1ea1i l\u00f2ng ch\u1ea3o Tarim Basin, n\u01a1i t\u1eadp trung ph\u1ea7n l\u1edbn c\u00e1c d\u00e2n t\u1ed9c s\u1ed1ng tr\u00ean l\u01b0ng ng\u1ef1a. Nh\u00e0 ng\u00f4n ng\u1eef h\u1ecdc Victor Mair thu\u1ed9c tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Pennsylvania, cho bi\u1ebft: \\\"C\u00f9ng v\u1edbi d\u1ee5ng c\u1ee5 c\u01b0\u1ee1i ng\u1ef1a v\u00e0 v\u0169 kh\u00ed \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y tron\u1eb9 ng\u00f4i m\u1ed9, ch\u00fang t\u00f4i gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng vi\u1ec7c ph\u00e1t minh ra qu\u1ea7n c\u00f3 ph\u1ea7n d\u01b0\u1edbi 164 https:\/\/thuviensach.vn","xoc ra c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn k\u1ef7 nguy\u00ean m\u1edbi trong vi\u1ec7c c\u01b0\u1ee1i ng\u1ef1a k\u1ebft h\u1ee3p v\u1edbi kh\u1ea3 n\u0103ng linh \u0111\u1ed9ng trong c\u00e1c tr\u1eadn chi\u1ebfn. V\u00ec v\u1eady, nh\u1eefng ng\u01b0\u1eddi s\u1eed d\u1ee5ng qu\u1ea7n c\u1ed5 c\u00f3 th\u1ec3 l\u00e0 nh\u1eefng ngi\u00ed\u1eddi ch\u0103n nu\u00f4i hay nh\u1eefng chi\u1ebfn binh\\\". H\u00f3a th\u1ea1ch chim c\u00f3 th\u1ee5 ph\u1ea5n chc c\u0103ij \u0111\u01b0\u1ee3c t\u1ec9h\u00f9ng? C\u00e1c nh\u00e0 khoa h\u1ecdc t\u1ea1i Vi\u1ec7n nghi\u00ean c\u1ee9u Senckenberg \u1eeb Frankfurt (\u0110\u1ee9c) \u0111\u00e3 m\u00f4 t\u1ea3 v\u1ec1 m\u1ed9t con chim h\u00f3a th\u1ea1ch \u0111\u01b0\u1ee3c cho l\u00e0 x\u01b0a nh\u00e2l so v\u1edbi nh\u1eefng m\u1eabu v\u1eadt thu th\u1eadp \u0111\u01b0\u1ee3c tr\u01b0\u1edbc \u0111\u00e2y v\u1ec1 m\u1ed9t lo\u00e0i chim th\u1ee5 ph\u00e2n cho c\u00e2y. Nh\u1edd d\u1ea1 d\u00e0y c\u1ee7a h\u00f3a th\u1ea1ch chim n\u00e0y \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n kh\u00e1 t\u1ed1t qua th\u1eddi gian n\u00ean c\u00e1c nhc\u00e0 khoa h\u1ecdc ph\u00e1t hi\u1ec7n v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00f3 ch\u1ee9a nhi\u1ec1u lo\u1ea1i ph\u00e2n hoa B\u00cd \u1ea9n hqttupasn:\/\/hthtuavien1sa6c5h.vn","c\u1ee7a c\u00e1c th\u1ef1c v\u1eadt kh\u00e1c nhau. X\u00e1c \u0111\u1ecbnh ni\u00ean \u0111\u1ea1i cho th\u00e2y \u00edt nh\u1ea5t m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa hoa v\u00e0 chim c\u00f3 t\u1eeb 47 tri\u1ec7u n\u0103m tr\u01b0\u1edbc. H\u00f3a th\u1ea1ch chim n\u00e0y \u0111\u01b0\u1ee3c thu th\u1eadp t\u1eeb khu v\u1ef1c m\u1ec7nh danh l\u00e0 \\\"Missel Pit\\\" (\u0110\u1ee9c) n\u01a1i t\u1eebng thu th\u1eadp nhi\u1ec1u h\u00f3a th\u1ea1ch n\u1ed5i ti\u1ebfng. To\u00e0n v\u0103n b\u00e0i b\u00e1o \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng bc\u00ed tr\u00ean t\u1ea1p ch\u00ed Biology Letters. Lo\u00e0i chim n\u00e0y bay t\u1eeb \u0111\u00f3a hoa n\u00e0y \u0111\u1ebfn \u0111\u00f3a hoa kia, v\u1edbi c\u00e1i m\u1ecf thanh m\u1ea3nh c\u1ee7a m\u00ecnh \u0111\u00e3 gi\u00fap th\u1ee5 ph\u00e2n cho th\u1ef1c v\u1eadt, r\u00e2\u2019t quan tr\u1ecdng \u0111\u1ec3 gi\u00fap c\u00e2y sinh s\u1ea3n. \u0110\u1eb7c bi\u1ec7t, \u1edf c\u00e1c v\u00f9ng nhi\u1ec7t \u0111\u1edbi v\u00e0 c\u1eadn nhi\u1ec7t \u0111\u1edbi th\u00ec chim c\u1ee7ng tham gia th\u1ee5 ph\u00e2n cho c\u00e2y t\u00edch c\u1ef1c kh\u00f4ng k\u00e9m c\u00f4n tr\u00f9ng. T\u1ea1p ch\u00ed Science Daily d\u1eabn l\u1eddi ti\u1ebfn s\u0129 Gerald Mayr cho bi\u1ebft \u0111\u00e3 t\u1eebng c\u00f3 g\u1ee3i \u00fd v\u1ec1 h\u00ecnh th\u1ec3 c\u1ee7a chim th\u1ee5 ph\u1ea5n cho c\u00e2y nh\u01b0ng ch\u01b0a c\u00f3 b\u1eb1ng ch\u1ee9ng c\u1ee5 th\u1ec3 nh\u01b0 m\u1eabu h\u00f3a th\u1ea1ch n\u00e0y. Cho \u0111\u1ebfn nay ch\u1ec9 c\u00f3 r\u1ea5t \u00edt m\u1eabu chim ru\u1ed3i s\u00f4ng c\u00e1ch \u0111\u00e2y ch\u1eebng 30 tri\u1ec7u n\u0103m cung c\u1ea5p b\u1eb1ng ch\u1ee9ng kh\u00e1 m\u01a1 h\u1ed3 v\u1ec1 vi\u1ec7c \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1ed1ng gi\u00fap c\u00e2y sinh s\u1ea3n. M\u1eabu h\u00f3a th\u1ea1ch c\u00f3 ni\u00ean \u0111\u1ea1i c\u00e1ch \u0111\u00e2y 47 tri\u1ec7u n\u0103m cho th\u00e2y nhi\u1ec1u h\u1ea1t ph\u00e2n v\u1edbi c\u00e1c k\u00edch c\u1ee1 kh\u00e1c nhau c\u00f2n \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n kh\u00e1 t\u1ed1t trong c\u01a1 th\u1ec3 n\u00f3. Nh\u01b0 v\u1eady, c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn r\u1eb1ng, h\u00f3a th\u1ea1ch chim c\u00f3 th\u1ec3 th\u1ee5 ph\u00e2n cho c\u00e2y. 166 https:\/\/thuviensach.vn","K\u1ec9nh vi\u00ean v\u1ecdng c\u1ed5 nh\u1ea5t th\u1ec3 gi\u00f3i \u00f3 (k\u0129u? C\u00e1c nh\u00e0 kh\u1ea3o c\u1ed5 \u1edf H\u00e0 Lan m\u1edbi \u0111\u00e2y ph\u00e1t hi\u1ec7n \u1ed1ng k\u00ednh vi\u1ec5n v\u1ecdng c\u00f3 t\u1eeb \u0111\u1ea7u th\u1ebf k\u1ef7 XVII v\u00e0 d\u01b0\u1ee3c cho l\u00e0 c\u1ed5 nh\u1ea5t th\u1ebf gi\u1edbi, khi \u0111ang \u0111c\u00e0o \u0111\u01b0\u1eddng h\u1ea7m xe l\u1eeda trong th\u00e0nh ph\u1ed1. Netherlands Times cho hay, chi\u1ebfc k\u00ednh thi\u00ean v\u0103n ban \u0111\u1ea7u \u0111\u01b0\u1ee3c suy do\u00e1n ch\u1ec9 l\u00e0 m\u1ed9t \u1ed1ng thi\u1ebfc g\u1ec9 v\u00e0 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t \u1ed5 d\u1ea1n. Nh\u00f3m chuy\u00ean gia c\u1ee7a B\u1ea3o t\u00e0ng Boerhaven t\u1ea1i Leiden x\u00e1c nh\u1eadn \u0111\u00e2y l\u00e0 k\u00ednh vi\u1ec5n v\u1ecdng sau khi quan s\u00e1t v\u00e0 nghi\u00ean c\u1ee9u k\u1ef9 h\u01a1n. B\u00cd \u1ea9n quanh ta 167 https:\/\/thuviensach.vn","K\u00ednh vi\u1ec5n v\u1ecdng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb tr\u01b0\u1edbc n\u0103m 1650. K\u1ebft qu\u00e1 ki\u1ec3m tra trong ph\u00f2ng th\u00ed nghi\u1ec7m cho th\u1ea5y n\u00f3 c\u00f3 \u0111\u1ed9 ph\u00f3ng \u0111\u1ea1i v\u1eadt th\u00ea l\u00ean g\u00e2p 5 l\u1ea7n. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y \u201c \u0111\u00e2y l\u00e0 \u00f4ng k\u00ednh vi\u1ec5n v\u1ecdng c\u1ed5 nh\u1ea5t \u1edf H\u00e0 Lan, v\u00e0 th\u1eadm ch\u00ed c\u00f3 th\u1ec3 l\u00e0 c\u1ed5 nh\u1ea5t th\u1ebf \u1ef3 \u1edb i\\\" , gi\u00e1o su' l\u1ecbch s\u1eed khoa h\u1ecdc Albert van Helden, m\u1ed9t chuy\u00ean gia v\u1ec1 l\u0129nh v\u1ef1c quang h\u1ecdc, cho hay. Helden tin r\u1eb1ng chi\u1ebfc k\u00ednh vi\u1ec5n v\u1ecdng n\u00e0y c\u00f3 th\u1ec3 b\u1ecb g\u00ec do \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng thi\u1ebfc. C\u00e1c lo\u1ea1i k\u00ednh l\u00e0m b\u1eb1ng \u0111\u1ed3ng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn \u1edf Ph\u00e1p hay Italy trong c\u00e1c giai \u0111o\u1ea1n sau d\u00f3, th\u01b0\u1eddng \u00edt g\u1eb7p hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y h\u01a1n. \u0110\u1ed9 ph\u00f3ng \u0111\u1ea1i c\u1ee7a \u1ed0ng k\u00ednh vi\u1ec5n v\u1ecdng kh\u00f4ng \u0111\u1ee7 l\u1edbn \u0111\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong m\u1ee5c \u0111\u00edch qu\u00e2n s\u1ef1 v\u00e0 c\u00f3 th\u1ec3 ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t c\u1ed9ng \u0111\u1ed3ng d\u00e2n cu'. K\u00ednh vi\u1ec5n v\u1ecdng d\u01b0\u1ee3c m\u1ed9t nh\u00e0 ch\u1ebf t\u1ea1o k\u00ednh m\u1eaft s\u1ed1ng t\u1ea1i Middelburg, H\u00e0 Lan, ph\u00e1t minh n\u0103m 1608. Giai \u0111o\u1ea1n d\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 l\u01b0u gi\u1eef nh\u1eefng d\u1ee5ng c\u1ee5 quan s\u00e1t c\u1ed5 nh\u1ea5t \u1edf H\u00e0 Lan l\u00e0 t\u1eeb n\u1eeda sau c\u1ee7a th\u00ea k\u1ef7 XVII. Ti\u00ean r\u00e1ch l\u1ee7m th\u1ec3 n\u00e0o? Tu\u1ed5i th\u1ecd b\u00ecnh qu\u00e2n c\u1ee7a m\u1ed9t t\u1edd ti\u1ec1n gi\u1ea5y v\u00e0o kho\u1ea3ng m\u1ed9t n\u0103m. Nh\u1eefng \u0111\u1ed3ng ti\u1ec1n c\u0169 r\u00e1ch nh\u0103n nh\u00fam g\u00e2y nhi\u1ec1u phi\u1ec1n ph\u1ee9c, r\u1ea5t b\u1ea5t ti\u1ec7n trong s\u1eed d\u1ee5ng. 168 https:\/\/thuviensach.vn","Cho n\u00ean h\u00e0ng ng\u00e0y B\u1ed9 T\u00e0i ch\u00ednh \u0111\u1ec1u ph\u00e1i th\u01b0 h\u1ed3i nh\u1eefng \u0111\u1ed3ng ti\u1ec1n c\u0169 r\u00e1ch b\u1ea9n th\u1ec9u t\u1eeb c\u00e1c ng\u00e2n h\u00e0ng, r\u1ed3i thay ch\u00fang b\u1eb1ng c\u00e1c \u0111\u1ed3ng ti\u1ec1n m\u1edbi. Ti\u1ec1n r\u00e1ch thu h\u1ed3i ph\u1ea3i b\u1ecf \u0111i, ngh\u0129a l\u00e0 kh\u00f4ng cho n\u00f3 l\u01b0u th\u00f4ng tr\u00ean th\u1ecb tr\u01b0\u1eddng n\u1eefa. Sau \u0111\u00f3, d\u00f9ng m\u00e1y ti\u00eau h\u1ee7y ch\u00fang. N\u1ebfu s\u01a1 \u00fd l\u00e0m h\u1ecfng \u0111\u1ed3ng ti\u1ec1n gi\u1ea5y th\u00ec c\u0169ng kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u1ed3ng ti\u1ec1n \u0111\u00f3 \u0111c\u00e3 m\u1ea5t h\u1ebft gi\u00e1 tr\u1ecb. N\u1ebfu ti\u1ec1n gi\u1ea5y v\u1eabn c\u00f2n gi\u1eef \u0111\u01b0\u1ee3c 3\/5 di\u1ec7n t\u00edch, ta c\u00f3 th\u00ea dem \u0111\u1ebfn B\u1ed9 T\u00e0i ch\u00ednh, ng\u01b0\u1eddi ta s\u1ebd d\u00f4i l\u1ea5y ti\u1ec1n m\u1edbi theo nguy\u00ean gi\u00e1. N\u1ebfu \u0111\u1ed3ng ti\u1ec1n c\u00f2n l\u1ea1i kh\u00f4ng \u0111\u1ee7 3 \/5 nh\u01b0ng nhi\u1ec1u h\u01a1n 1\/2 th\u00ec c\u00f3 th\u1ec3 \u0111\u00f4i \u0111\u01b0\u1ee3c m\u1ed9t n\u1eeda gi\u00e1 tr\u1ecb. B\u00cd \u1ea9n quanh ta 169 https:\/\/thuviensach.vn","M \u1ee5c\u00ec\u1ee5c L \u1edd i n\u00f3i \u0111\u1ea7u................................................................... 5 T \u1ea1 i sao n\u01b0\u1edbc l\u1ea1 i d\u1eadp t\u1eaf t \u0111\u01b0\u1ee3c l\u1eeda?.......................... 7 V\u00ec sao chu\u00f4ng n\u1ee9t \u0111\u00e1nh kh\u00f4ng k\u00eau?....................... 8 C\u00f3 d\u00e1ng l\u00e0 k\u1eb9o cao su c\u00f3 th \u1ec3 \u1edf trong c\u01a1 th \u1ec3 ng\u01b0\u1eddi nhi\u1ec1u n\u0103m kh\u00f4ng?.............................. 9 V\u00ec sao k h i s\u1eed d\u1ee5ng m \u1ed9t s\u00f4 \u0111\u1ed3 \u0111i\u1ec7n g ia d\u1ee5ng p h \u1ea3 i n\u1ed1 i d\u00e2y ti\u1ebf p \u0111 \u1ea5 t? ............................................... 9 V\u00ec sao ngi\u1ec3\u1eddi trong \u1ea3nh nh\u00ecn theo ch\u00fang ta ? .......... 11 V\u00ec sao s\u1edd v\u00e0o kim lo \u1ea1 i th \u1ea5 y l\u1ea1nh?............................12 V\u00ec sao c\u00e0ng \u0103n nhi\u1ec1u kem l\u1ea1 i c\u00e0ng th\u1ea5y kh\u00e1 t?.......13 V\u00ec sao ng\u1ed3i gh\u1ebf sau l\u1ea1 i kh i\u1ebf n ta say xe h\u01a1n?......... 13 Vi\u00ean \u0111\u1ea1n v\u00e0 ti\u1ebfng n\u1ed5, t\u1ed1c \u0111\u1ed9 n\u00e0o nhanh h\u01a1n?....... 14 T \u1ea1 i sao vi\u00ean \u0111\u00e1 l\u1ea1nh l\u1ea1 i n \u1ed5 i l\u00ea n tr\u00ea n n\u01b0\u1edbc?......... 14 Vt sao c\u1ed1c th\u00fay tin h d\u1ec5 v\u1ee1 k h i \u0111\u1ed5 mt\u1edbc s\u00f4i v\u00e0o?........ 15 V\u00ec sao nit\u00f3c \u0111un s\u00f4i c\u00f3 bong b\u00f3ng n \u1ed5 i l\u00ea n ? ............. 16 V\u00ec sao n\u01b0\u1edbc c\u00f3 ga r\u00f3 t v\u00e0o trong c\u1ed1c s\u1ebd n\u1ed5i b\u1ecdt?...... 16 T \u1ea1 i sao k h i m \u00e0i dao p h \u00e1 i cho m \u1ed9t \u00ed t n\u01b0\u1edbc v\u00e0o ph\u00eda tr\u00ea n a \u1ec9a dao?.............................................. 17 Tr\u00ean m \u1eb7t s\u1eefa \u0111un s\u00f4i v\u00ec sao c\u00f3 l\u1edbp v\u00e1ng?............. 18 170 https:\/\/thuviensach.vn","V\u00ec sao c\u00f3 lo \u1ea1 i \u0111\u1ed3n<\u1ecb h\u1ed3 p h \u1ea3i l\u00ean d\u00e2y c\u00f3t, c\u00f3 lo \u1ea1 i \u0111\u00f3 kh\u00f4ng?........................................ 19 V\u00ec sao s\u1eaft d\u1ec5 b \u1ecb g \u1ec9? ..................................................... 20 V\u00ec sao t\u00fa l\u1ea1nh l\u1ea1 i k\u00eau \\\"ro ro \\\"? ................................ 21 \u0110\u01b0a tay v\u00e0o c\u1ed1c n\u01b0\u1edbc c\u00f3 l\u00e0m t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng?............................................. 21 T \u1ea1 i sao th \u00e1 i h\u00e0nh l\u00e0m ta ch\u00e0y n\u01b0\u1edbc m \u1eaft?............. 22 V\u00ec sao tr\u00ea n m i\u1ebfng \u0111\u1eadu ph\u1ee5 \u0111\u00f4ng l\u1ea1nh c\u00f3 nhi\u1ec1u l\u1ed7 nh\u1ecf?..........................................................23 V\u00ec sao qu\u1ea7n \u00e1o \u00edt\u1edb t l\u1ea1 i c\u00f3 m\u00e0u \u0111\u1eadm ?.......................24 T \u1ea1 i sao ph\u00edch n\u01b0\u1edbc n\u00f3ng c\u00f3 th \u1ec3 g i\u1eef n h i\u1ec7 t? ............25 V\u00ec sao gi\u1ea5y b\u00e1o c\u0169 l\u1ea1 i chuy\u1ec3n sang m\u00e0u v\u00e0ng?........ 26 V\u00ec sao tr\u00ea n n\u1eafp \u1ea5m n\u01b0\u1edbc l\u1ea1 i c\u00f3 l\u1ed7 ? ......................... 27 M i\u1ebfng \u0111\u00e1 l\u1ea1nh tan ra c\u00f3 l\u00e0m t\u0103ng m\u1ef1c n\u01b0\u1edbc?......... 28 V\u00ec sao kh\u00f4ng \u0111u\u1ee4c d\u00f9ng tay \u01b0\u1edbt ch\u1ea1m v\u00e0o c\u00f4ng t\u1eafc \u0111i\u1ec7n?...........................................29 V\u00ec sao qu\u1ea3 b\u00f3ng l\u1ea1 i p h \u1ea3 i tr\u00f2 n?.................................29 V\u00ec sao \u0111\u00e8n ch\u1edbp a\u1ec9a m \u00e1y \u1ea3nh c\u00f3 th \u1ec3 p h \u00e1t s\u00e1ng m \u1ea1nh?............................................ 30 V\u00ec sao tr\u00ed\u1ee7xg g\u00e0 ung l\u1ea1 i n\u1ed5i l\u00ean tr\u00ean m \u1eb7t n\u01b0\u1edbc?..........32 V\u00ec sao lo \u1ea1 i dao c\u1eaft th\u01b0\u1eddng, l\u1ea1 i kh\u00f4ng c\u1eaft \u0111\u01b0\u1ee3c k\u00ednh?........................................... 32 V\u00ec sao kh\u00f4ng n\u00ean \u0103n v\u1ecf khoai lat\u00edg?.......................33 B\u00cd \u1ea9n quanh ta 171 https:\/\/thuviensach.vn","V\u00ec sao trong thang m \u00e1y c\u00f3 nhi\u1ec1u c\u00f4ng t\u1eafc \u0111i\u1ec7n v\u00e0 b\u1ed5ng \u0111\u00e8n?...................................... 33 V\u00ec sao \u1ed1ng kh\u00f3 i nh\u00e0 m \u00e1y l\u1ea1 i cao th\u1ebf ?.....................34 \u0110 \u00e1y ch\u1eadu hoa p h \u1ea3 i c\u00f3 l\u1ed1 th\u1ee7ng l\u00e0 v\u00ec sao?.............. 35 V\u00ec sao k h i u\u1ed1ng thu\u1ed1c p h \u1ea3 i n\u00f4ng n\u01b0\u1edbc?.................. 36 V\u00ec sao th\u1ea7y thu\u00f4c ti\u1ebf p x\u00fac v\u1edb i b\u1ec7nh nh\u00e2n m\u00e0 \u00edt k h i l\u00e2 y b\u1ec7nh?................................36 Vi sao s\u1ed1 ng\u00e0y trcnig m\u1ed3i th\u00e1ng kh\u00f4ng gi\u1ed1\u00ec\u0129y nhau?........37 V\u00ec sao g\u01b0\u01a1ng chi\u1ebfu ra \u0111\u01b0\u1ef1c \u0111\u1ed3 v \u1ead t? ......................... 38 T\u1ea1i sao \u0111u\u1eddng \u0111 i \u1edfv\u00ectng ma l\u1ea1 i quanh co u\u1ed1n l\u01b0\u1ee3n?....... 38 V\u00ec sao tr\u00ea n que kem c\u00f3 k h \u00f3 i tr\u1eafng b\u1ed1c l\u00ean ?..........39 V\u00ed saoph\u1ea3i d\u00f9n\u1eb9 ch\u0103n b\u00f4ng b\u1ecdc l\u1ea5y tlnmg \u0111i\u00f3\u00ecg que kem?..AO V\u00ec sao ng\u1ecdn l\u1eeda bao g i\u1edd c\u0169ng v\u01b0\u01a1n l\u00ean ?................. 40 V\u00ec sao b\u00e1c s\u0129 kho\u00e1c \u00e1o cho\u00e0ng tr\u1eafng v\u00e0 \u0111 \u1ed9 i m\u0169 tr\u1eafng?........................................................41 V\u00ec sao c\u00f3 th \u1ec3 d\u1eebng \u1ed1ng h \u00fa t \u0111 \u1ec3 h\u00fa t \u0111\u1ed3 u\u1ed1ng?.........42 V\u00ec sao tr\u00ea n l\u1ed1p xe l\u1ea1 i c\u00f3 r\u00e3nh?................................. 42 V\u00ec sao \u0111\u1ed3ng h\u1ed3 \u0111 \u1eb7 t c\u1ea1nh nam ch\u00e2m th \u00ec kh\u00f4ng ch\u00ednh x\u00e1c n\u1eefa?......................................... 44 L\u00e0m th \u1ebf n\u00e0o \u0111\u1ec3 \u0111o n h i\u1ec7 t \u0111\u1ed9 h\u01a1n l.ooobc?............45 V\u00ec sao k h i r\u00f3 t n\u01b0\u1edbc s\u00f4i, n\u01b0\u1edbc l\u1ea1nh l\u1ea1 i c\u00f3 ti\u00ea n g k\u00eau kh\u00e1c nhau?.....................................46 V\u00ec sao b\u1ecdt x\u00e0 ph\u00f2ng c\u00f3 nhi\u1ec1u m\u00e0u s\u1eafc?................. 47 172 https:\/\/thuviensach.vn","V\u00ec sao kh i xe ch\u1ea1y qua l\u1ea1 i g\u00e2y n\u00ean lu\u1ed3ng gi\u00f3?........... 48 V\u00ec sao n\u01b0\u1edbc gi\u1ebfng m\u00f9a \u0111\u00f4ng \u1ea5m, m\u00f9a h\u00e8 m \u00e1t?......... 49 1\/7 sao n\u1ea5u c\u01a1m b\u0103ng n\u1ed3i \u00e1p su\u1ea5t l\u1ea1 i mau ch\u00edn?......... 50 V\u00ec sao tr\u1ebdn n\u00f3c nh\u00e0 cao t\u00ed\u1eefig l\u1ea1i ph\u00e1i l\u1eafp c\u1ed9t ch\u00f3ng s\u00e9t?.... 51 V\u00ec sao kh\u00f4ng \u0111\u01b0\u1ee3c tr\u00e1nh m\u01b0a d\u01b0\u01a1i g\u1ed1c c\u00e2y to?.......52 V\u00ec sao m\u00f9a h\u00e8 th\u1ee9c \u0103n d\u1ec5 b \u1ecb th iu ? .......................... 53 V\u00ec sao m \u1ed9t n\u0103m c\u00f3 12 th\u00e1ng?................................... 54 V\u00ec sao m \u1ed9t tu\u1ea7n l\u1ec1 c\u00f3 7 ng\u00e0y?.................................. 54 V\u00ec sao m \u1ed9t th\u00eca \u0111\u01b0\u1eddng cho v\u00e0o c\u1ed1c n\u01b0\u1edbc m\u00e0 kh\u00f4ng d\u00e2ng l\u00ea n ? .................................. 55 V\u00ec sao b \u1ecb \u0111i\u1ec7n g i\u1ead t l\u1ea1 i ch\u1ebft?.....................................56 T \u1ea1i sao l\u1ea1 i c\u00f3 m u\u1ed1i?................................................... 57 Do \u0111\u00e1u que di\u00eam ph\u00e1t ra l\u1eeda?................................ 58 V\u00ec sao v\u00f4 l\u0103ng \u00f4 t\u00f4 l\u1ea1 i c\u00f3 h\u00ecnh tr\u00f2 n?....................... 59 V\u00ec sao t\u00e0u h\u00f3a p h \u1ea3 i ch\u1ea1y tr\u00ea n du\u1eebng ra y?............. 59 V\u00ec sao \u1edf nh\u1eefng \u0111\u1ea7u n \u1ed1 i \u0111\u01b0\u1eddng ray p h \u00e1 i c\u00f3 kho\u1ea3ng tr\u00f4ng?............................................... 60 V\u00ec sao b\u00ean d\u01b0\u1edbi \u0111\u01b0\u1eddng ray p h \u00e1 i r\u1ea3 i \u0111\u00e1?................ 61 T \u1ea1 i sao t\u00e0u, thuy\u1ec1n kh\u00f4ng ch\u1ea1y ngang \u0111\u01b0\u1ee3c?...... 61 V\u00ec sao ph \u1ea3 i s\u01a1n m\u00e0u \u0111\u00f3 \u1edb \u0111\u00e1y t\u00e0u?......................... 63 V\u00ec sao t\u00e0u l\u1ea1 i p h \u1ea3i c\u1eadp b\u01a1 ng\u01b0\u1ee3c v\u01a1 i d\u00f2ng n\u01b0\u01a1c ch\u00e0y?.......................................................... 63 V\u00ec sao k h i bay, m\u00e1y bay l\u1ea1 i c\u00f3 kh \u00f3 i tr\u1eaf ng?...........64 B\u00cd \u1ea5n quanh ta 173 https:\/\/thuviensach.vn","V\u00ec sao chim l\u1ea1 t c\u00f3 th \u1ec3 l\u00e0m h\u1ecfng m \u00e1y bay?............64 V\u00ec sao ng\u01b0\u1eddi \u1edf trong t\u00e0u ng\u1ea7m k h i t\u00e0u l\u1eb7n xu\u1ed1ng n\u01b0\u1edbc l\u1ea1 i kh\u00f4ng b \u1ecb ch\u1ebft ng\u1ea1t?........ 65 V\u00ec sao xe t\u0103ng l\u1ea1 i p h \u1ea3 i l\u1eaf p b\u00e1nh x\u00edch?...................65 V\u00ec sao t\u00ean l\u1ee9a c\u00f3 th \u1ec3 bay xa?...................................66 T \u1ea1 i sao kh\u1ea3 n\u0103ng g i\u1eef n h i\u1ec7 t a\u00eca ph\u00edch ni\u1ec9\u1edbc gi\u1ea3m d\u1ea7n?........................................ 67 V\u00ec sao dao phay d\u1ec3 b \u1ecb g \u1ec9? .......................................... 68 V? sao nam ch\u00e2m h \u00fa t \u0111\u01b0\u1ee3c s\u1eaft?................................69 V\u1ec9 sao kh\u00f4ng n\u00ean \u0103n nhi\u1ec1u m \u00ec \u0103n li\u1ec1 n ? ..................70 V\u00ec sao ch\u00fang ta c\u1ea7n t\u0103ng c\u01b0\u1eddng \u0103n c\u00e1?...................71 V\u00ed sao ph \u00e1 i \u0103n c\u1ea3 rau v\u00e0 hoa qu\u1ea3?...........................71 V\u00ec sao kh\u00f4ng n\u00ean \u0103n qu\u00e1 m \u1eb7n?................................ 72 V\u00ec sao sau b\u1eefa \u0103n kh\u00f4ng n\u00ean v\u1eadn \u0111\u1ed9ng m\u1ea1nh?......... 72 V\u00ec sao m\u00f3n \u0103n \u0111 \u1ec3 trong t\u1ee7 l\u1ea1nh c\u1ea7n \u0111un n\u00f3ng r\u1ed3 i m \u1edbi \u0103n?......................................... 73 T \u1ea1 i sao d\u01b0a c\u1ea3i m u\u1ed1i l\u1ea1 i b \u1ecb v\u00e1ng tr\u1eaf ng?................ 73 T\u1ea1i sao tr\u00ean l\u00e1 c\u1edd Olym pic l\u1ea1 i c\u00f3 n\u0103m v\u00f2ng tr\u00f2n?.... 74 Th\u1ebf g i\u1edb i c\u00f3 bao nhi\u00eau d\u00e2n t\u1ed9c?................................76 (P c l\u00e0 n h i\u1ec7 t \u0111\u1ed9 c\u1ee7a n\u01b0\u1edbc hay b\u0103ng?....................... 77 C\u00f3 p h \u1ea3 i l\u00f2ng \u0111\u1ecf v\u00e0 l\u00f2ng tr\u1eafng tr\u1ee9ng \u0111\u00f4ng \u0111\u1eb7c \u1edf n h i\u1ec7 t \u0111\u1ed9 gi\u1ed1ng nhau?............................ 77 V\u00ec sao kh\u00f4ng th\u1ec3 d\u00f9ng n\u01b0\u1edbc d\u1eadp t\u1eaf t d\u1ea7u \u0111ang ch\u00e1y?....78 174 https:\/\/thuviensach.vn","C\u00f3 ph\u1ea3i m \u00f9i th\u01a1m l\u00e0 \u1edf d\u1ea1ng kh \u00ed? .......................... 79 T \u1ea1 i sao x \u00e1 t x\u00e0 ph\u00f2ng l\u00ean da l\u1ea1 i b \u1ecb tr\u01a1 n?............... 80 V\u00ec sao ph\u00e1o hoa l\u1ea1 i c\u00f3 nhi\u1ec1u m\u00e0u s\u1eafc?.................. 81 V\u00ec sao xe l\u1eeda, \u00f4 t\u00f4 v\u1eadn chuy\u1ec3n d\u1ea7u x\u0103ng \u0111\u1ec1u d\u0169ng c\u00e1c th\u00f9ng ch\u1ee9a h\u00ecnh tr\u1ee5 tr\u00f2 n ? ................ 82 V\u00ec sao t\u00e0u ng\u1ea7m c\u00f3 th \u1ec3 l\u1eb7n xu\u1ed1ng, n\u1ed5i l\u00ean ?..........83 V? sao xe t\u0103ng l\u1ea1 t c\u00f3 th \u1ec3 quay \u0111\u1ea7u?........................84 V\u00ec sao xe t\u0103ng \\\" th\u1ee7y l\u1ef1c\\\" c\u00f3 th \u1ec3 b\u01a1i qua s\u00f4ng?.........85 V\u00ec sao \u0111i\u1ec7n th o \u1ea1 i c\u00f3 th \u1ec3 chuy\u1ec3n \u0111\u01b0\u1ee3c ti\u00ea n g n\u00f3 i?...85 V\u00ec sao m\u00e1y v i t\u00ednh c\u00f3 th \u1ec3 nh\u1edb \u0111\u01b0\u1ee3c r\u00e2 t nhi\u1ec1u th \u00ed\u1ee9 ....86 V\u00ec sao t\u1ee7 l\u1ea1nh l\u1ea1 i l\u00e0m l\u1ea1nh \u0111t\u1ec9\u1ee2c?........................... 87 V\u00ec sao m\u00e1y g i\u1eb7 t l\u1ea1 i c\u00f3 th \u1ec3 g i\u1eb7 t s\u1ea1ch qu\u1ea7n \u00e1o?........ 87 V\u00ec sao t\u00edn hi\u1ec7u \u0111i\u1ec7n tho\u1ea1i c\u00f3 th \u1ec3 truy\u1ec1n \u0111 i r\u00e1 t xa?...88 V\u00ec sao k h i m \u1edf tiv i l\u00ean, l\u1ea1 i nghe th \u1ea5 y ti\u00ea n g tr\u01b0\u1edbc kh \u1ec9 th\u1ea5y h\u00ecnh?..................................................88 V\u00ec sao pin l\u1ea1 i c\u00f3 \u0111i\u1ec7 n ?...............................................89 V\u00ec sao b\u00f3ng \u0111\u00e8n l\u1ea1 i c\u00f3 h\u00ecnh qu\u1ea3 l\u00ea ? ........................89 T \u1ea1 i sao \u00e1nh s\u00e1ng l\u1ea1 i c\u00f3 m\u00e0u tr\u1eafng?........................90 T r\u00e1 i b\u00f3ng l\u00e0m sao n\u1ea9y l\u00ean \u0111\u01b0\u1ee3c?............................ 91 T \u1ea1 i sao d\u1ea7u \u0103n c\u00f3 t\u00edn h a x it l\u1ea1 i \u0111\u1ef1ng \u0111\u01b0\u1ee3c trong h\u1ed9p s\u1eaft?....................................92 V\u00ec sao k h i s\u1edd ta y l\u00ean th\u1ee7 y tin h l\u1ea1nh th \u00ec th\u1ee7y tin h xung quanh ng\u00f3n tay b \u1ecb m\u1edd?...................93 B\u00cd \u1ea9n quanh ta 175 https:\/\/thuviensach.vn","V\u00ec sao l\u1ea1 i g i\u01a1 c\u1edd tr\u1eaf n g k h i \u0111\u1ea7u h\u00e0ng?............ .94 V\u00ec sao tr\u00ean v\u1ecf \u00e1 ia t\u00f4m , cua lu\u1ed9c l\u1ea1 i c\u00f3 m\u00e0u \u0111\u1ecf?........95 V\u0129 sao nu\u1edbc u\u1ed1ng ch\u1eeda c\u1ed3n c\u00f3 th\u1ec3 l\u00e0m ngu\u1eddi b\u1ecb say?....... 95 V\u00ec sao t\u01b0 th\u00ea v i\u1ebf t ch\u1eef p h \u1ea3 i ngay ng\u1eafn?................. 96 T \u1ea1i sao kh\u00f4ng n\u00ean u\u1ed1ng n\u01b0\u1edbc s\u00f4i \u0111 \u1ec3 l\u00e2u?.............. 97 K hi v\u00ec\u1ee9i v\u00e0o b\u00f3ng t\u1ed1 i v\u00ec sao l\u1ea1 i kh\u00f4ng nh\u00ecn th\u1ea5y g\u00ec?.....98 V\u00ec sao s\u01b0\u1edfi than a \u00eci c\u00f3 th \u1ebf g\u00e2y ch\u1ebft ng\u01b0\u1eddi?...........99 T\u1ea1i sao que di\u00eam b \u1ecb u\u1ed1n cong k h i ch\u00e1y?................ 99 V\u1ec9 sao th\u00fay tin h trong su\u1ed1t?.....................................100 T \u1ea1i sao n\u01b0\u1edbc rau dang xanh nh\u01b0ng h\u1ec5 v \u1eaf t chanh v\u00e0o l\u00e0 chuy\u1ec3n sang m\u00e0u d\u1ecf h\u1ed3ng?........101 V\u00ec sao ph\u00eda tr\u00ea n c\u00f9ng a\u00eda ng\u1ecdn l\u1ee9a l\u1ea1 i c\u00f3 m\u00e0u xanh?......................................................... 102 V\/ sao kim \u0111\u1ed3ng h\u1ed3 chuy\u1ec3n d\u1ed9ng?.......................... 102 V\u00ec sao x\u00e0 ph\u00f2ng l\u1ea1 i t\u00e2 y r\u1ee9a \u0111\u01b0\u1ef1c?.......................... 103 V? sao t\u01b0\u1ee3ng Th\u1ea7n V\u1ec7 N \u1eef l\u1ea1 i kh\u00f4ng c\u00f3 ta y? ..........103 V\u1ec9 sao kh\u00f4ng \u0111\u01b0\u1ef1c d\u00f9ng ta y kh\u00f4ng \u0111 \u1ec3 k\u00e9o ng\u01b0\u1eddi kh\u00e1c \u0111ang b \u1ecb \u0111i\u1ec7n g i\u1ead t? ....................104 V? sao k h i d i chuy\u1ec3n trong v\u00f9ng l\u1ee9a ch\u00e1y th \u00ec n\u00ean b\u00f2?....................................................................104 V\/ sao c\u1ea7n v\u1ea5y c\u1eb7p n h i\u1ec7 t \u0111\u1ed9 tr\u01b0\u1edbc k h i s\u1eed d\u1ee5ng?.... 105 V\u00ed sao d\u00e0n v\u1ec9olon \u0111\u01b0\u1ee3c g \u1ecd i l\u00e0 \u201c Ho\u00e0ng h\u1eadu c\u1ec9ia nh\u1ea1c c\u1ee5\\\"?........................................106 176 https:\/\/thuviensach.vn","V\u00ec sao g\u1ecdi \u0111\u00e0n piano l\u00e0 \\\" Vua nh\u1ea1c c\u1ee5\u201d ?................ 107 T \u1ea1i sao c\u1ea3 th \u1ebf g i\u1edb i l\u1ea1 i l\u1ea5 y ti\u1ebf n g A nh l\u00e0m ti\u1ebfn g ph\u1ed5 th\u00f4ng?................................................. 108 V\u00ec sao l\u1ea1 i c\u1eadn th \u1ecb? .......................................................108 V\/ sao b\u00e1nh xe l\u1ea1 i h\u00ecnh tr\u00f2 n?...................................109 M \u00e1 y \u00e1nh ch\u1ee5p \u1ea3nh nh\u01b0 th \u1ebf n\u00e0o?.............................111 \u1ea2m thanh \u0111\u01b0\u1ee3c ghi b\u1eb1ng c\u00e1ch n\u00e0o?......................... 112 B\u1ea3ng \u0111en \u0111\u01b0\u1ee3c ch\u00ea t\u1ea1o nh\u01b0 th\u00ea n\u00e0o?...................... 114 Ph\u00e1o hoa \u0111\u01b0\u1ef1c l\u00e0m nh\u01b0 th\u00ea n\u00e0o?.............................116 K im la b\u00e0n ch\u1ec9 v\u1ec1 h\u01b0\u1edbng n\u00e0o?................................ 118 T \u1ea1i sao \u0111\u01b0\u1eddng c\u00f3 v \u1ecb ng\u1ecdt?......................................... 119 Thu\u1eadt th \u00f4 i m i\u00ean c\u00f3 nguy hi\u1ec3m kh\u00f4ng?.................. 121 K h \u00ed c\u1ea7u l\u00ean cao nh\u01b0 th \u1ebf n\u00e0o?................................... 122 L\u00e0m s\u1ea1ch n\u01b0\u1edbc \u0111 \u1ec3 u\u1ed5ng nh\u01b0 th\u00ea n\u00e0o?.....................125 Ch\u1ea5t t\u1ea9 y r\u1eeda l\u00e0 g \u00ec? ..................................................... 126 X\u0103ng ch\u00e1y nh\u01b0 th \u1ebf n\u00e0o?............................................128 T\u1ea1i sao \u0111\u1ed1t x\u0103ng l\u1ea1 i c\u00f3 th\u00ea l\u00e0m \u00f4 t\u00f4 ch\u1ea1y \u0111\u01b0\u1ee3c?..... 128 V\u00ec sao ng\u01b0\u1eddi \u0111 i xe \u0111\u1ea1p c\u00f3 th\u1ec3gi\u1eef\u0111\u01b0\u1ee3c th\u0103ng b\u1eb1ng?..129 Lo\u00e0i ng\u01b0\u1eddi b\u1eaft \u0111\u1ea7u \u0103n k\u1eb9o t\u1eeb bao gi\u1edd?.................. 131 C\u00e1t l\u00e0 g \u00ec? ...................................................................... 132 M u \u00f4 i l\u00e0 g\u00ec?...................................................................134 Ng\u1ee5y trang l\u00e0 g \u00ec? ........................................................ 135 C \u00e1i g\u00ec l\u00e0m cho x i m\u0103ng tr\u1edd n\u00ean c\u01b0ng?................... 137 B\u00ed \u1ea9n quanh ta 177 https:\/\/thuviensach.vn","V\u00ec sao b\u1ea1c b \u1ecb x\u1ec9n m\u00e0u?...............................................138 \u0110\u1ed9ng c\u01a1 v\u0129nh c\u1eedu l\u00e0 g \u00ec? .............................................139 C\u00f3 th \u1ec3 ch\u1ebf t\u1ea1o \u0111\u01b0\u1ef1c \u0111\u1ed9ng c\u01a1 v\u0129nh \u00e1 \u00f9 i hay kh\u00f4ng?.... 140 Chu\u00f4ng p h \u00e1 t ra ti\u1ebf n g k\u00eau nh\u01b0 th \u1ebf n\u00e0o?................ 141 \u1ea2 m nh\u1ea1c l\u00e0 g \u00ec? ............................................................143 \u0110\u1eadp n\u01b0\u1edbc l\u00e0 g \u00ec? .......................................................... 145 N \u01a1i n\u00e0o cung c\u1ea5p s\u1eaft \u0111 \u1ec3 luy\u1ec7n th\u00e9p?......................147 G\u1ea1ch x\u00e2y \u0111\u01b0\u1ee3c l\u00e0m nh\u01b0 th\u00ea n\u00e0o?........................... 148 Ch\u1ebf t\u1ea1o s\u1ee2i t\u1ed5ng h\u1ee3p nh\u01b0 th\u00ea n\u00e0o?........................ 150 S\u1eefa b\u00f2 c\u00f3 nh\u1eefng th\u00e0nh ph\u1ea7n n\u00e0o?......................... 151 Sonar l\u00e0 g \u00ec? ................................................................. 153 V\u00ec sao c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng \\\"m a ch\u01a1 i\\\"?............................. 155 N\u00e0ng ti\u00ea n c\u00e1 c\u00f3 th\u1ef1c s\u1ef1 t\u1ed3n t\u1ea1 i? ............................. 156 \\\" C \u00e1t b i\u1ebf t h \u00e1 t\u201d c\u00f3 \u0111\u00fang kh\u00f4ng?................................158 Truy\u1ec7n c\u1ed5 t\u00edch kh\u00f4ng ch\u1ec9 l\u00e0 t\u01b0\u1edfng t\u01b0\u1ee3ng?............. 159 N\u00e0ng M ona Lisa c\u00f3 ch\u1ecb em kh\u00f4ng?......................... 162 M \u1ed9 t chi\u1ebfc qu\u1ea7n c\u00f3 th \u1ec3 t\u1ed3n t\u1ea1 i 3300 n\u0103m kh\u00f4ng? ..164 H\u00f3a th\u1ea1ch chim c\u00f3 th\u1ee5 ph\u1ea5n cho c\u00e2y \u0111it\u1ee2c kh\u00f4ng?.....165 K \u00ednh vi\u1ec5 n v\u1ecdng c\u1ed5 nh \u1ea5t th \u1ebf g i\u1edb i \u1edf \u0111\u00e0u?................167 Ti\u1ec1n r\u00e1ch l\u00e0m th\u00ea n\u00e0o?.............................................169 178 https:\/\/thuviensach.vn","10 V\u1ea0N C\u00c2U H \u1ece I V\u00cc SAO? B\u00cd \u1ea8N QUANH TA NH\u00c0 XU\u1ea4T B\u1ea2N H\u1ed4NG \u0110\u1ee8C 65 Tr\u00e0ng Thi, Ho\u00e0n Ki\u1ebfm, H\u00e0 N\u1ed9i, Vi\u1ec7t Nam Tcl: 043 926 0024 - Fax: 043 926 0031 E-mail: [email protected] Ch\u1ecbu tr\u00e1ch nhi\u1ec7m xu\u1ea5t b\u00e1n G i\u00e1m \u0111\u1ed1c. B\u00f9i Vi\u1ec7t B\u1eafc Ch\u1ecbu tr\u00e1ch nhi\u1ec7m n\u1ed9i dung: T\u1ed5ng b i\u00ean t\u1eadp: L\u00fd B\u00e1 To\u00e0n Bi\u00ean t\u1eadp: Nguy\u1ec5n Th\u1ebf Vinh Thi\u1ebft k \u1ebf b\u00eca: L\u00ea Thu Hi\u1ec1n S\u1eeda b\u1ea3n in: Mai Vinh - Ng\u1ecdc Lam LI\u00caN K\u1ebeT XU\u1ea4T B\u1ea2N: C\u00d4NG TY TNHH \u0110T & PT V\u0102N HO\u00c1 VI\u1ec6T NH\u00c0 S\u00c1CH TR\u00cd \u0110\u1ee8C 808 \u0110\u01b0\u1eddng L\u00e1ng - \u0110\u1ed1ng \u0110a - H\u00e0 N\u1ed9i Tel: (04) 37757091 - Fax: (04) 32595016 www.nhasachtriduc.com.vn In 3000 cu\u1ed1n, kh\u1ed5 13x20.5cm, t\u1ea1i C\u00f4ng ty TNHH TM Thu\u1eadn Ph\u00e1t, Th\u00f4n V\u0103n Tr\u00ec, X\u00e3 Minh Khai, Huy\u1ec7n T\u1eeb Li\u00eam, H\u00e0 N\u1ed9i. C\u0103n c\u1ee9 tr\u00ean s\u00f4 \u0111\u0103ng k\u00fd k\u1ebf ho\u1ea1ch xu\u1ea5t b\u1ea3n: 1045- 2015\/CXBIPH\/46-25\/H\u0110 v\u00e0 quy\u1ebft \u0111\u1ecbnh s\u1ed1: 1118\/Q\u0110-NXBH\u0110 ng\u00e0y 11\/5\/2015. In xong v\u00e0 n\u1ed9p l\u01b0u chi\u1ec3u qu\u00fd III n\u0103m 2015. https:\/\/thuviensach.vn","v\u00ec SAO B\u00c1NH XE L\u1ea0I H\u00ccNH TR\u00d2N? \u00ed\/i\u1ec3 m n\u1eb1m ch\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00e2m. T\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec3m tr\u00ean v\u00f2ng tr\u00f2n \u0111\u1ec3u c\u00f3 kho\u1ea3ng c\u00e1ch \u0111\u1ebfn t\u00e2m nh\u01b0 nhau v\u00e0 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u00e1n k\u00ednh. B\u00e1nh xe \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf h\u00ecnh tr\u00f2n, tr\u1ee5c b\u00e1nh xe \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o t\u00e2m h\u00ecnh tr\u00f2n \u0111\u00f3, khi xe chuy\u1ec3n \u0111\u1ed9ng, tr\u1ee5c xe lu\u00f4n c\u00e1ch m\u1eb7t \u0111\u1ea5t m\u1ed9t kho\u1ea3ng b\u1eb1ng b\u00e1n k\u00ednh b\u00e1nh xe, do \u0111\u00f3 ng\u01b0\u1eddi ng\u1ed5i tr\u00ean xe m\u1edbi c\u00f3 th\u1ec3 gi\u1eef th\u0103ng b\u1eb1ng \u1ed5n \u0111\u1ecbnh nh\u01b0 ng\u1ed3i d\u01b0\u1edbi m\u1eb7t \u0111\u1ea5t. Gi\u1ea3 s\u1eed b\u00e1nh xe kh\u00f4ng ph\u1ea3i l\u00e0 h\u00ecnh tr\u00f2n, khi xe ch\u1ea1y tr\u1ee5c c\u1ee7a xe s\u1ebd l\u00fac cao l\u00fac th\u1ea5p, xe s\u1ebd kh\u00f4ng th\u1ec3 \u1ed5n \u0111\u1ecbnh v\u1eefng ch\u1eafc v\u00e0 an to\u00e0n \u0111\u01b0\u1ee3c. https:\/\/thuviensach.vn","V\u00ec soo nu\u1edbc l\u1ecdi d\u1eadp t\u1ed1 t \u1ee1u\u1ee3c l\u1ee7o? Vi SQO b\u00f3ng \u1ee1\u00e8n l\u1ecdi c\u00f3 h\u00ecnh qu\u1ea3 l\u00ea? 1 SQO tu\u1ee3ng th\u1ed5n V\u1ec7 ri\u1eef l\u1ecdi kh\u00f4ng c\u00f3 to\u1ee5? \u00ec SQO ng\u01b0\u1eddi trong \u1ecfnh nh\u00ecn theo ch\u00fang to? Do \u1ee1\u00f4u que di\u00eam ph\u00f3t s\u00f3ng? V\u00ec soo t\u00f2u h\u1ecfo ch\u1ecd\u1ee5 tr\u00ean \u1eddu\u1eebng ro\u1ee5? Vi sqo xe t\u00f4ng l\u1ecdi ph\u1ea3i l\u1ed1p b\u00f3nh x\u00edch? isB\u00ed\\\\k 9 \/\u00ccI\u0128;0 m . 10 v\u1ea1n c\u00e2u h\u1ecfi v\u00ec sao? - B\u00ed \u1ea5n quanh ta \u00a9 TRIDUCBOOKS 9 3 50 3 9 012 2 5 5 house of knovvle\u01a1ge GhI\u00c1ttp: s\u0129:2\/\/.t0h0u0viVeNn\u0110sach.vn"]