Water on Mars?

Astrophysicist Neil deGrasse Tyson tells us that new evidence indicates the Red Planet might still harbor liquid water, and why that might also indicate the presence of Martian life.

A recent round of discoveries made by NASA robots indicates there might be flowing water under the surface of Mars. And where there’s water there may be life. Astrophysicist Neil deGrasse Tyson talks with host Bruce Gellerman about the search for living organisms on Mars.