Thursday, July 24, 2014

ScienceDaily: Extrasolar Planets News

ScienceDaily: Extrasolar Planets News


New approach in search for extraterrestrial intelligence: Target alien polluters

Posted: 23 Jul 2014 08:12 AM PDT

Humanity is on the threshold of being able to detect signs of alien life on other worlds. By studying exoplanet atmospheres, we can look for gases like oxygen and methane that only coexist if replenished by life. But those gases come from simple life forms like microbes. What about advanced civilizations? Would they leave any detectable signs? They might, if they spew industrial pollution into the atmosphere.

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