What Story Does Earth's Life Tell About ET?

How easy is it to create life? It happened here at least once. Does that give scientists studying the creation of life from non-life (abiogenesis) much to work with?

Source: http://www.npr.org/blogs/13.7/2011/10/18/141455579/what-story-does-earth-s-life-tell-about-et?ft=1&f=1057

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