Second Genesis: Looking For Aliens Here, There And Everywhere

Did the seeds of life on Earth begin on Mars? Are we part of Earth's first alien invasion? Adam Frank says we may be looking at a future full of discoveries in our own solar system that could reset our understanding of life and its origin.

Source: http://www.npr.org/blogs/13.7/2013/04/09/176557134/second-genesis-looking-for-aliens-here-there-and-everywhere?ft=1&f=1057

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