Video: Will new discovery bring back woolly mammoth?
Friday, May 31, 2013 - 11:30
in Biology & Nature
Derrick Pitts, chief astronomer and planetarium director for the Franklin Institute in Philadelphia, talks to the "CBS This Morning" co-hosts about the 10,000-year-old woolly mammoth carcass found in Russia that appears to have blood in it and is raising the speculation of cloning.