Thread: Stephen Hawking warns "we should avoid aliens"
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Old 02-12-2010, 22:41   #28
punky
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Re: Stephen Hawking warns "we should avoid aliens"
Quote:
Originally Posted by Hugh View Post
Anaerobic lifeforms - they were here long before us....
That wasn't what I meant. Plants don't need oxygen to live. However this isn't a radical change in biochemistry that aliens would need to survive on other planets.
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