<p class="">We don’t know how life got its start. But as more evidence emerges, explains astrobiologist Caleb Scharf, only a few theories are emerging as leading contenders. Scharf is the director of the Columbia Astrobiology Center at Columbia University.</p> <p class=""><a href= "http://www.calebscharf.com/">calebscharf.com</a></p>

<description>&lt;p class=""&gt;We don’t know how life got its start. But as more evidence emerges, explains astrobiologist Caleb Scharf, only a few theories are emerging as leading contenders. Scharf is the director of the Columbia Astrobiology Center at Columbia University.&lt;/p&gt; &lt;p class=""&gt;&lt;a href= "http://www.calebscharf.com/"&gt;calebscharf.com&lt;/a&gt;&lt;/p&gt;</description>

We don’t know how life got its start. But as more evidence emerges, explains astrobiologist Caleb Scharf, only a few theories are emerging as leading contenders. Scharf is the director of the Columbia Astrobiology Center at Columbia University.

What Is Life?

Episode 4. Caleb Scharf: How Did Life Begin?

Episode 4. Caleb Scharf: How Did Life Begin?

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