NBC’s Brian Cheung joins TODAY to break down numbers and facts about the blue planet, including how it got its name and how ...

Discover interesting facts about Saturn, its rings and whether it could contain extraterrestrial life.

Earth Day is on Tuesday, April 22, this year. The annual observation is set aside to increase awareness around environmental ...

Save guides, add subjects and pick up where you left off with your BBC account. However, many years ago, the Earth looked very different to how it does today. Around 250 million years ago ...

Sound as we know it does not exist in space. That’s because, on Earth, sound mainly travels to our ears via vibrating air molecules. Because space is a vacuum, meaning there is no matter at all ...