科学美国人60秒 SSS 2014-09-26

Today's early warning systems for earthquakes give you at most a few minutes to prepare for the hit. That's because today's systems rely on detecting the first early rumbles of an actual earthquake before sending the alarm. Now researchers say that f

发表于:2018-12-24 / 阅读(50) / 评论(0) 分类 2014年Scientific American(九)月

科学美国人60秒 SSS 2014-09-30

At some point we all have to memorize the names of the earth's oceans . But in reality all these waters are connected, so how do we know where one body begins and another ends. Just follow the trash, because the location of sea-ferrying garbage can b

发表于:2018-12-24 / 阅读(39) / 评论(0) 分类 2014年Scientific American(九)月
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