Wed, May 22, 2013, 11:35 AM EDT - U.S. Markets close in 4 hrs 25 mins
David Letterman - Piedmont Bird Callers: Gyrfalcon
David Letterman - Piedmont Bird Callers: Red-Throated Loon
Why did penguins stop flying?
Cat goes crazy for concrete
Emotions run high as tornado victims return home
FBI kills man with possible ties to Boston attack
Military dad surprises daughter at gym