Thursday, 19 June 2014

Why haven't we encountered aliens yet? The answer could be climate change.

Science Focus

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The Conversation

Enrico Fermi, when asked about intelligent life on other planets, famously replied, "Where are they?" Any civilization advanced enough to undertake interstellar travel would, he argued, in a brief period of cosmic time, populate its entire galaxy. Yet, we haven't made any contact with such life. This has become the famous "Fermi Paradox."

Various explanations for why we don't see aliens have been proposed — perhaps interstellar travel is impossible or maybe civilizations are always self-destructive. But with every new discovery of a potentially habitable planet, the Fermi Paradox becomes...

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 » see original post http://theweek.com/article/index/263101/why-havent-we-encountered-aliens-yet-the-answer-could-be-climate-change
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