Whether it's live on the Smithsonian’s National Zoo's panda cam or in front of a crowd, possibly no other animal's sex life is as closely watched as the giant pandas' is. And there's a reason. These cuddly-looking black and white bears just can't figure out how to mate. But, with a little help from science, the once-endangered giant panda is making a comeback. In honor of the 50th anniversary of giant pandas at Smithsonian's National Zoo, we peep into the (not so secret) sex lives of pandas.

Guests: