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Extraterrestrial beings monitoring Earth might view changes in our atmosphere as symptomatic of a a self-destructing civilization and take drastic action to keep us from becoming a more serious threat, according to a highly speculative scenario developed last year by scientists at NASA and Penn State University. 
oliviersc's comment,
April 10, 2012 12:34 PM
I like this and put it in Google+ and I'll speak about it in my Revue (in French) to night ...
Sakis Koukouvis's comment,
April 10, 2012 12:41 PM
That's interesting. I wish you a good speaking
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dailygalaxy.com - Scientists confirmed this week that rocks collected recently in the Moroccan desert came from the Red Planet. A little-known fact is that each year Earth is hit by by half a dozen or so one-pound or larger rocks that were...
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While watching a video of a coronal mass ejection travel from the sun, it would appear that a solar observatory has discovered a massive alien spacecraft...
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A team of scientists has discovered that adenine an guanine and other DNA building blocks can form in outer space and have been deposited on Earth's surface by meteorites Via mei
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A consortium of super civilizations might pool resources to build a chain of power stations encircling the supermassive black hole at the core of our galaxy.
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