Sinkholes: Exploring the science behind the catastrophes

A new special on Discovery's "Destination America" includes first-hand accounts of sinkhole survivors. Geologist Drew Glasbrenner - who is on the show - and contributor Michio Kaku, a physics professor at the City College of New York, talk to the "CBS This Morning" co-hosts about the phenomenon and why Florida is 'ground zero' for sinkholes. VIDEO