2-th episode of 4-th season "Through the Wormhole"

What "Through the Wormhole" 2-th episode about

We can all trace our lives back to a beginning. But what defines the beginning? Is it the moment when two cells unite? Or does something have to know it is alive before its life can begin?

Episode number: 2

Episode name: "When Does Life Begin?"

Episode release date: 6 june 2013 at 02:00

Status: aired

Rating: 7.6