French Spanish Portuguese Italian German Russian Japanese Korean Chinese

Search form

Access language guides Search mos.org Make a Gift Become a Member Buy Tickets
Main Menu Search Get Directions

What Is A Dinosaur? | How To Mend A Heart

Everyone has a favorite dinosaur, but what is a dinosaur? Is it a reptile? Is it a bird? Dinosaur paleontologist David Varricchio discusses these extinct animals. Also, learn how we may one day be able to mend a broken heart . . . after a heart attack.