细菌将是地球最后生存的生物
<p><span word="The">The</span> <span word="last">last</span> <span word="surviving">surviving</span> <span word="creatures">creatures</span> <span word="on">on</span> <span word="Earth">Earth</span> <span word="will">will</span> <span word="be">be</span> <span word="tiny">tiny</span> <span word="organisms">organisms</span> <span word="living">living</span> <span word="deep">deep</span> <span word="underground">underground</span>, <span word="according">according</span> <span word="to">to</span> <span word="scientists">scientists</span>.</p><p><span word="Researchers">Researchers</span> <span word="used">used</span> <span word="a">a</span> <span word="computer">computer</span> <span word="model">model</span> <span word="to">to</span> <span word="assess">assess</span> <span word="our">our</span> <span word="planet">planet</span>'<span word="s">s</span> <span word="fate">fate</span> <span word="billions">billions</span> <span word="of">of</span> <span word="years">years</span> <span word="from">from</span> <span word="now">now</span>.</p><p><span word="They">They</span> <span word="found">found</span> <span word="that">that</span> <span word="as">as</span> <span word="the">the</span> <span word="Sun">Sun</span> <span word="becomes">becomes</span> <span word="hotter">hotter</span> <span word="and">and</span> <span word="brighter">brighter</span>, <span word="only">only</span> <span word="microbes">microbes</span> <span word="would">would</span> <span word="be">be</span> <span word="able">able</span> <span word="cope">cope</span> <span word="with">with</span> <span word="the">the</span> <span word="extreme">extreme</span> <span word="conditions">conditions</span> <span word="that">that</span> <span word="the">the</span> <span word="solar">solar</span> <span word="changes">changes</span> <span word="would">would</span> <span word="bring">bring</span>.</p><p><span word="The">The</span> <span word="research">research</span> <span word="is">is</span> <span word="being">being</span> <span word="presented">presented</span> <span word="at">at</span> <span word="the">the</span> <span word="National">National</span> <span word="Astronomy">Astronomy</span> <span word="Meeting">Meeting</span>.</p><p><span word="Jack">Jack</span> <span word="O">O</span>'<span word="Malley">Malley</span> <span word="James">James</span>, <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="St">St</span> <span word="Andrews">Andrews</span> <span word="in">in</span> <span word="Scotland">Scotland</span>, <span word="said">said</span>: "<span word="There">There</span> <span word="won">won</span>'<span word="t">t</span> <span word="be">be</span> <span word="very">very</span> <span word="much">much</span> <span word="oxygen">oxygen</span> <span word="present">present</span>, <span word="so">so</span> <span word="they">they</span> <span word="need">need</span> <span word="to">to</span> <span word="be">be</span> <span word="able">able</span> <span word="to">to</span> <span word="survive">survive</span> <span word="in">in</span> <span word="low">low</span> <span word="or">or</span> <span word="zero">zero</span>-<span word="oxygen">oxygen</span> <span word="environments">environments</span>, <span word="high">high</span> <span word="pressures">pressures</span>, <span word="and">and</span> <span word="high">high</span> <span word="salinities">salinities</span> <span word="because">because</span> <span word="of">of</span> <span word="evaporating">evaporating</span> <span word="oceans">oceans</span>."</p><p><span word="Mass">Mass</span> <span word="extinction">extinction</span></p><p><span word="The">The</span> <span word="future">future</span> <span word="of">of</span> <span word="life">life</span> <span word="on">on</span> <span word="Earth">Earth</span> <span word="is">is</span> <span word="tied">tied</span> <span word="to">to</span> <span word="that">that</span> <span word="of">of</span> <span word="the">the</span> <span word="Sun">Sun</span>, <span word="and">and</span> <span word="over">over</span> <span word="time">time</span>, <span word="our">our</span> <span word="star">star</span> <span word="will">will</span> <span word="become">become</span> <span word="more">more</span> <span word="and">and</span> <span word="more">more</span> <span word="luminous">luminous</span>.</p><p><span word="Scientists">Scientists</span> <span word="from">from</span> <span word="the">the</span> <span word="universities">universities</span> <span word="of">of</span> <span word="St">St</span> <span word="Andrews">Andrews</span>, <span word="Dundee">Dundee</span> <span word="and">and</span> <span word="Edinburgh">Edinburgh</span> <span word="used">used</span> <span word="this">this</span> <span word="fact">fact</span> <span word="to">to</span> <span word="create">create</span> <span word="a">a</span> <span word="forecast">forecast</span> <span word="for">for</span> <span word="our">our</span> <span word="planet">planet</span>'<span word="s">s</span> <span word="future">future</span> <span word="environment">environment</span>.</p><p><span word="In">In</span> <span word="a">a</span> <span word="billion">billion</span> <span word="years">years</span>' <span word="time">time</span>, <span word="the">the</span> <span word="heat">heat</span> <span word="from">from</span> <span word="the">the</span> <span word="Sun">Sun</span> <span word="will">will</span> <span word="become">become</span> <span word="so">so</span> <span word="intense">intense</span>, <span word="that">that</span> <span word="the">the</span> <span word="oceans">oceans</span> <span word="start">start</span> <span word="to">to</span> <span word="evaporate">evaporate</span>.</p><p>"<span word="Once">Once</span> <span word="you">you</span> <span word="get">get</span> <span word="to">to</span> <span word="this">this</span> <span word="tipping">tipping</span> <span word="point">point</span>, <span word="you">you</span> <span word="get">get</span> <span word="a">a</span> <span word="lot">lot</span> <span word="more">more</span> <span word="water">water</span> <span word="in">in</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span> <span word="and">and</span> <span word="because">because</span> <span word="water">water</span> <span word="vapour">vapour</span> <span word="is">is</span> <span word="a">a</span> <span word="greenhouse">greenhouse</span> <span word="gas">gas</span>, <span word="that">that</span> <span word="sets">sets</span> <span word="this">this</span> <span word="runaway">runaway</span> <span word="greenhouse">greenhouse</span> <span word="effect">effect</span>... <span word="and">and</span> <span word="you">you</span> <span word="end">end</span> <span word="up">up</span> <span word="with">with</span> <span word="the">the</span> <span word="Earth">Earth</span> <span word="heating">heating</span> <span word="up">up</span> <span word="to">to</span> 100<span word="C">C</span> <span word="or">or</span> <span word="more">more</span> <span word="plus">plus</span> <span word="what">what</span> <span word="we">we</span> <span word="experience">experience</span> <span word="today">today</span>," <span word="explained">explained</span> <span word="Mr">Mr</span> <span word="O">O</span>'<span word="Malley">Malley</span> <span word="James">James</span>, <span word="a">a</span> <span word="PhD">PhD</span> <span word="student">student</span>.</p><p><span word="This">This</span>, <span word="he">he</span> <span word="said">said</span>, <span word="combined">combined</span> <span word="with">with</span> <span word="falling">falling</span> <span word="levels">levels</span> <span word="of">of</span> <span word="oxygen">oxygen</span>, <span word="would">would</span> <span word="lead">lead</span> <span word="to">to</span> <span word="the">the</span> <span word="rapid">rapid</span> <span word="loss">loss</span> <span word="of">of</span> <span word="plants">plants</span> <span word="and">and</span> <span word="larger">larger</span> <span word="animals">animals</span>.</p>
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