SSS 2008-10-30

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. When it comes to flu shots, the more the merrier. Happily, that doesnt mean you need to get jabbed more than once. What it does mean, according to two re

发表于:2018-12-24 / 阅读(38) / 评论(0) 分类 Scientific American(十)月

SSS 2008-10-31

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. In an earthquake, the ground beneath you gives way. Its no longer the one thing you can count on to be solid and stable. Instead, it swerves, dips and

发表于:2018-12-24 / 阅读(52) / 评论(0) 分类 Scientific American(十)月

SSS 2008-10-29

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Still lots of undecided voters out there, with less than a week to go before election day. But many of these undecideds may already have made their choice. Even though

发表于:2018-12-24 / 阅读(59) / 评论(0) 分类 Scientific American(十)月
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