Digging for Bird-Dinosaurs

The extinction of dinosaurs some sixty-five million years ago is one of the greatest biological catastrophes in the history of our planet. Yet in recent years, paleontologists have turned up increasing evidence that ancestors of one group of dinosaurs still fly among us: birds. Join Cathy Forster, one of the few female paleontologists working today on an expedition to Madagascar in search of clues to the mystery of bird evolution.