Watch Jurassic Giants

The Jurassic Era was nature at its most grandiose. But how did these massive beasts rise to prominence over millions of years, and then all of a sudden, along with half the life on planet Earth, disappear? Clues suggest an extraterrestrial impact caused a cascade of catastrophes. Join a paleontologist and award-winning professor to explore this mystery, and more, in "Jurassic Giants: The Rise and