Learn about the great dinosaur extinction through graphics, stories, and history by watching this extremely captivating video.
Reviews patterns of biological evolution during the Mesozoic Era.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
The common ancestor of theropod dinosaurs is a small, non-specialized reptile.
There are three categories of actions that humans could take to keep an asteroid from hitting Earth. None is very practical.
The Petrified Forest, Arizona contains fossils of nine extinct tree species and fossils created by other processes.