The serie 'The Big Question', produced in 2005.

The great British biologist Clinton Richard Dawkins tries to (and find) an scientific answer to (one of) the biggest questions of humanity: Why are we here and where do we come from?

(1/3): http://www.youtube.com/watch?v=dFOaadaWfxo&feature=related (8'01'')
(2/3): http://www.youtube.com/watch?v=zSQ-_OKkygY&feature=related (8'01'')
(3/3): http://www.youtube.com/watch?v=0FEenwMK1UI&feature=related (8'01'')