Do Aliens Exist?

A conversation between an astrophysicist and an oceanographer.
1:07 | 07/02/13

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Transcript for Do Aliens Exist?
What amazes me is just. Three days ago there was a press release that 310 earth sized planets were found orbiting a star just -- -- leaders from here. I mean that's that's a stroll in the park compared to the size of our -- I think out there's there's -- to be and a organisms like us. But my question is what else what's beyond those you know with a with would evolve beyond what we are. And actuarial and move far from the -- when you really think cook who probably that we will find an alien civilization -- we're really veering off topic here. But is through the atmosphere of the planet. Lake if you were to be if you -- monitoring earth over the last fifty years you've noticed the you know rapid changes in CO2 in -- for methane and you know. It's just that -- -- -- -- over millions of years not not decades so you know that there -- something going on and maybe some is watching us from those who don't know. -- --

This transcript has been automatically generated and may not be 100% accurate.

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