Remembering Apollo 8, critical forerunner to moon landing

It's been 50 years since NASA’s critical Apollo 8, the first manned spacecraft to leave Earth, orbit the moon and return. The bold and risky mission paved the way for the moon landing seven months later, at a time when Cold War pressure weighed heavily on American space exploration. Jeffrey Brown has a look back at Apollo 8, also the focus of NOVA's "Apollo's Daring Mission."