A 21-year-old Minneapolis man pleaded guilty to conspiring to provide material support to ISIS tells Scott Pelley how he was radicalized by the Internet videos of the dead American al Qaeda cleric Anwar al-Awlaki; Colorado Governor John Hickenlooper urges caution to the five states voting on legalizing recreational pot next month and tells Dr. Jon LaPook there still isn't enough reliable information on the drug's impact; Anderson Cooper reports from Malawi, Africa on beautiful music created by inmates and their guards behind prison walls.
