Daniel, Kelly, and Katrine take on the origins of life. They discuss competing definitions for "life", whether it's even helpful to have a definition, the oldest evidence we have for life, and how we think life got started.

Should the government be hiding aliens?
56:05

Listener Questions #47 - Plant Questions (featuring Dr. Manuel Lerdau)
1:09:50

How far can we go with chemical rockets?
48:40