7/29: Speculation grows after discovery of airplane debris; Archaeologists find human remains in Jamestown, Va.

A broken part of a plane wing has washed up on the French island Reunion in the West Indian Ocean. Investigators are studying whether it's part of the missing Malaysian Airlines Flight 370. Jeff Pegues has more details; bones of four of the original English settlers in Jamestown, Va., have been excavated, giving a glimpse into America's beginnings. Chip Reid digs deeper into this discovery.