科学家：全球变暖将使人类变矮
<p><span word="Global">Global</span> <span word="warming">warming</span> <span word="could">could</span> <span word="make">make</span> <span word="humans">humans</span> <span word="shorter">shorter</span>, <span word="warn">warn</span> <span word="scientists">scientists</span> <span word="who">who</span> <span word="claim">claim</span> <span word="to">to</span> <span word="have">have</span> <span word="found">found</span> <span word="evidence">evidence</span> <span word="that">that</span> <span word="it">it</span> <span word="caused">caused</span> <span word="the">the</span> <span word="world">world</span>'<span word="s">s</span> <span word="first">first</span> <span word="horses">horses</span> <span word="to">to</span> <span word="shrunk">shrunk</span> <span word="nearly">nearly</span> 50 <span word="million">million</span> <span word="years">years</span> <span word="ago">ago</span>.</p><p><span word="In">In</span> <span word="fact">fact</span>, <span word="a">a</span> <span word="team">team</span> <span word="from">from</span> <span word="the">the</span> <span word="universities">universities</span> <span word="of">of</span> <span word="Florida">Florida</span> <span word="and">and</span> <span word="Nebraska">Nebraska</span> <span word="says">says</span> <span word="it">it</span> <span word="has">has</span> <span word="found">found</span> <span word="a">a</span> <span word="link">link</span> <span word="between">between</span> <span word="the">the</span> <span word="Earth">Earth</span> <span word="heating">heating</span> <span word="up">up</span> <span word="and">and</span> <span word="the">the</span> <span word="size">size</span> <span word="of">of</span> <span word="mammals">mammals</span> -- <span word="horses">horses</span>, <span word="in">in</span> <span word="this">this</span> <span word="case">case</span>, <span word="the">the</span> <span word="last">last</span> <span word="time">time</span> <span word="the">the</span> <span word="world">world</span> <span word="heated">heated</span> <span word="up">up</span>.</p><p><span word="The">The</span> <span word="scientists">scientists</span> <span word="used">used</span> <span word="fossils">fossils</span> <span word="to">to</span> <span word="follow">follow</span> <span word="the">the</span> <span word="evolution">evolution</span> <span word="of">of</span> <span word="horses">horses</span> <span word="from">from</span> <span word="their">their</span> <span word="earliest">earliest</span> <span word="appearance">appearance</span> 56 <span word="million">million</span> <span word="years">years</span> <span word="ago">ago</span>.</p><p><span word="As">As</span> <span word="temperatures">temperatures</span> <span word="went">went</span> <span word="up">up</span> <span word="their">their</span> <span word="size">size</span> <span word="went">went</span> <span word="down">down</span>, <span word="and">and</span> <span word="vice">vice</span> <span word="versa">versa</span>; <span word="at">at</span> <span word="one">one</span> <span word="point">point</span> <span word="they">they</span> <span word="were">were</span> <span word="as">as</span> <span word="small">small</span> <span word="as">as</span> <span word="a">a</span> <span word="house">house</span> <span word="cat">cat</span>, <span word="said">said</span> <span word="Dr">Dr</span> <span word="Jonathan">Jonathan</span> <span word="Bloch">Bloch</span>, <span word="curator">curator</span> <span word="of">of</span> <span word="the">the</span> <span word="Florida">Florida</span> <span word="Museum">Museum</span> <span word="of">of</span> <span word="Natural">Natural</span> <span word="History">History</span>, <span word="was">was</span> <span word="quoted">quoted</span> <span word="by">by</span> <span word="the">the</span> "<span word="Daily">Daily</span> <span word="Mail">Mail</span>" <span word="as">as</span> <span word="saying">saying</span>.</p><p><span word="The">The</span> <span word="scientists">scientists</span> <span word="say">say</span> <span word="that">that</span> <span word="the">the</span> <span word="current">current</span> <span word="warming">warming</span> <span word="could">could</span> <span word="have">have</span> <span word="the">the</span> <span word="same">same</span> <span word="effect">effect</span> <span word="on">on</span> <span word="mammals">mammals</span> -- <span word="and">and</span> <span word="could">could</span> <span word="even">even</span> <span word="make">make</span> <span word="humans">humans</span> <span word="smaller">smaller</span>.</p><p>"<span word="Horses">Horses</span> <span word="started">started</span> <span word="out">out</span> <span word="small">small</span>, <span word="about">about</span> <span word="the">the</span> <span word="size">size</span> <span word="of">of</span> <span word="a">a</span> <span word="small">small</span> <span word="dog">dog</span> <span word="like">like</span> <span word="a">a</span> <span word="miniature">miniature</span> <span word="schnauzer">schnauzer</span>. <span word="What">What</span>'<span word="s">s</span> <span word="surprising">surprising</span> <span word="is">is</span> <span word="that">that</span> <span word="after">after</span> <span word="they">they</span> <span word="first">first</span> <span word="appeared">appeared</span>, <span word="they">they</span> <span word="then">then</span> <span word="became">became</span> <span word="even">even</span> <span word="smaller">smaller</span> <span word="and">and</span> <span word="then">then</span> <span word="dramatically">dramatically</span> <span word="increased">increased</span> <span word="in">in</span> <span word="size">size</span>, <span word="and">and</span> <span word="that">that</span> <span word="exactly">exactly</span> <span word="corresponds">corresponds</span> <span word="to">to</span> <span word="the">the</span> <span word="global">global</span> <span word="warming">warming</span> <span word="event">event</span>, <span word="followed">followed</span> <span word="by">by</span> <span word="cooling">cooling</span>.</p><p>"<span word="It">It</span> <span word="had">had</span> <span word="been">been</span> <span word="known">known</span> <span word="that">that</span> <span word="mammals">mammals</span> <span word="were">were</span> <span word="small">small</span> <span word="during">during</span> <span word="that">that</span> <span word="time">time</span> <span word="and">and</span> <span word="that">that</span> <span word="it">it</span> <span word="was">was</span> <span word="warm">warm</span>, <span word="but">but</span> <span word="we">we</span> <span word="hadn">hadn</span>'<span word="t">t</span> <span word="understood">understood</span> <span word="that">that</span> <span word="temperature">temperature</span> <span word="specifically">specifically</span> <span word="was">was</span> <span word="driving">driving</span> <span word="the">the</span> <span word="evolution">evolution</span> <span word="of">of</span> <span word="body">body</span> <span word="size">size</span>," <span word="Dr">Dr</span> <span word="Bloch">Bloch</span> <span word="said">said</span> <span word="in">in</span> <span word="the">the</span> "<span word="Science">Science</span>" <span word="journal">journal</span>.</p><p>(<span word="Read">Read</span> <span word="by">by</span> <span word="Nelly">Nelly</span> <span word="Min">Min</span>. <span word="Nelly">Nelly</span> <span word="Min">Min</span> <span word="is">is</span> <span word="a">a</span> <span word="journalist">journalist</span> <span word="at">at</span> <span word="the">the</span> <span word="China">China</span> <span word="Daily">Daily</span> <span word="Website">Website</span>.)</p>
页:
[1]