《The Precipice 》作者：- Ben Bova【EPUB】 -

标题: 《The Precipice 》作者：- Ben Bova【EPUB】 [打印本页]

作者: zaq 时间: 2014-4-25 07:46
标题: 《The Precipice 》作者：- Ben Bova【EPUB】
And? with? special? thanks? to? Jeff? Mitchell,? a? real? rocket? scientist;? to? Chris? Fountain,? metallurgist? and optimist;? and? to? Lee? Modesitt,? an? economist? with? imagination;? true? friends? all. ? The? modern? tropics? and? their? fringes? support? more? than? half? the? world's? population,? numbered? in? the billions.? Many? already? live? at? the? fringe? of? survival,? dependent? on? food? aid? transported? from? the? grain? belts of? more? temperate? zones.? Even? a? small? climatic? shift...? would? physically? compress? the? geographical? limits for? cereal? cropping....? I? leave? it? to? your? imagination? what? such? a? pace? of? climate? cha

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