Why is hair darker after you shave it? Can you train grass? And, How do dogs choose where to poop? Gus Sorola challenges Chris Demarais and evolutionary biologist Sally Le Page with some of the quirkiest science questions submitted by viewers.

How do birds sit on live wires and not get electrocuted? And, the damage outer space does to your body. Gus Sorola challenges Chris Demarais and evolutionary biologist Sally Le Page with some of the quirkiest science questions submitted by viewers.