Category: Planet Earth


What Is The World's Largest Tree?

The largest tree in the world is a giant sequoia (Sequoiadendron giganteum) in California's Sequoia National Park. Called General Sherman, the tree is about 52,500 cubic feet (1,487 cubic meters) in volume. That's the...


How Do Smoke Detectors Work?

In the United States, a person dies in a fire or from a fire related injury every two hours. According to National Fire Protection Association data, most people who survived house fires were able...