Will humans soon set foot on Mars?
Retired shuttle commander Capt. Mark Kelly and Mars One finalists Dr. Leila Rowland Zucker and H. Peter Felgentreff join to talk about the ambitious Mars One project, and what the future holds for humankind in space.
NASA spacecraft lands on Mars03:41
Ron Howard: Human drama takes shape in 'Mars'06:29
Wife of imprisoned NASA scientist calls his sentence a ‘sick joke’04:47
What does the EPA closing its key science office mean for the future?05:36
Japanese billionaire to be the first tourist on the moon04:34
One More Thing: NASA considering allowing advertising in space01:24