"How efficient do you think are our methods of receiving radio-signals are-for possible detection of extra-terrestrial life? "
Content with the tag: “mass extinctions”
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Impact from the Deep
Strangling heat and gases emanating from the earth and sea, not asteroids, most likely caused several ancient mass extinctions. Peter Ward from NAI’s Alumni Team at the University of Washington asks in this week’s Scientific American: “Could the same killer-greenhouse conditions build once again?”
Source: [Link]
October 18, 2006 / Posted by: Shige Abe
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