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This is Scientific American's 60-Second Science,I am Steve Mirsky.Got a minute? Its accepted that a large meteor impact 65 million years ago was responsible for the mass extinction of the dinosaurs. Which opened up niches for birds and mammals. But l
经典歌曲-风中尘埃dust in the wind - kansas I close my eyes only foe a moment and the moment's gone all my dream pass before my eyes curiosity dust in the wind all we are is dust in the wind same old songs just drop of water in an endless sea
AS IT IS 2015-09-09 Meteor Explodes in Skies Over Thailand 泰国曼谷天降火球并爆炸 A meteor exploded over the sky in Thailand in a bright streak of gold. Meteors are also known as falling stars. This meteor crashed through the Earth's atmos
37 研究表明2500万年前流星曾碰撞过地球 DATE=4-18-01 TITLE=SCIENCE REPORT - Meteor Collision With Earth BYLINE=Jill Moss (Start at 59
77 流星雨成因探索 Date=8-2-01 Ttle=science report - the Perseid meteor shower Bline=Mario Ritter (Start at 59
如果问一个美国年轻人是支持希拉里呢?还是支持特朗普?很可能每四个人里就会有一个人会告诉你,Ta宁可让一颗巨大的流星毁灭地球,也不愿意这二位中的任何一位当选。 Young Americans are