Life: What Is It? Will We Know It If We See It On Other Planets?

09/20/2012 08:08 am ET
  • Cara Santa Maria Science correspondent, Huffington Post; editor, Talk Nerdy to Me

What is life? It's a deceptively simple question. Philosophers and scientists have pondered it for millennia, and they have yet to settle on a satisfactory answer. And as we venture into a new era of scientific exploration, the inevitable question arises: will we recognize life if we find it elsewhere in the cosmos?

How would you define life? Would that definition hold up on a distant planet around a distant star? Learn more by watching the video above. And don't forget to reach out on Twitter, Facebook, or by leaving a comment below. Come on, talk nerdy to me!

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