Computer scientists are now running computer programs to determine just what sounds could have been produced by a recently uncovered duck billed dinosaur's skull. A new theory says that the snake might put this electricity to use to sense its environment. A cat purrs when it's happy, but humans certainly can't. That extra oxygen helped keep the gargantuan flies breathing. Here's what to look for when instead of little green men, there's only little green algae.
Teeth record a history of what an animal eats and drinks.
And since water composition varies according to the weather, an animals' teeth can actually be used to track the climate. They're some of the deepest diving creatures in the ocean. Now they may start helping scientists explore the ocean depths as well. Spider webs may be nothing but annoying in your own house, but inch per inch they're incredibly strong, and researchers would like to use them to make anything from parachutes to seat belts. Deep in the jungles of South America in the murky waters of the Amazon, lives the electric eel, capable of delivering an electric jolt of up to 600 volts.