All this information has been passed down to us through mammoths preserved in ice, fossilized skeletons, and--shades of Jurassic Park--insects encased in amber (early dragonflies had the wingspans of pigeons!). This 24-minute video also shows the Komodo dragon, who certainly has the features of a dinosaur, and the present Serengeti plain to give us an idea of how prehistoric plains might have appeared. Prehistoric Animals has a lot of good footage of today's animals as well as interesting facts about their relatives, but look elsewhere if you want dinosaurs. --David Horiuchi