Astrophysicist, Neil degrasse Tyson

If aliens visited us what would you ask them? What would they look like - would they have a head and arms? What would they think of what we call a "Big Mac?" My good friend Neil degrasse Tyson returns as a guest where we explore those questions and alot more as we talk about his terrific book, "Take Me To Your Leader" in which he gives us a whole new set of unique ways to look at the question of whether alien life exists.