Environment
Blue Whale: Largest Animal Ever
It is believed that no animal — living or dead — has ever been larger than the blue whale. This giant marine mammal can grow up to 120 feet in length and weigh more than 100 tons. Like other large undersea animals, the blue whale reaches its massive size by feeding on microscopic animals known [...]
Fossils: How They're Formed
66 Million BC Everything we know about dinosaurs comes from studying the fossils they left behind. Not every animal or plant that died in the distant past created a fossil. Usually, whatever was left of a dead animal was eaten by scavengers or gradually dissolved into the earth by the forces of air and water. [...]