Talk about a bizarre feature of the human body: If you happened to swallow a razor blade, your stomach acid would dissolve it. Acids are ranked on a scale from zero to 14—the lower the pH level, the ...

The NASA Hubble Space Telescope, which is hundreds of miles above the Earth, has been taking incredible pictures that help with future studies and research. But to learn more about the telescope. Here ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Stay sharp and learn something new every day or stock up on knowledge for the next 105 days with these ...

Like Dr. Seuss once said, “There are so many things you can learn about, but you’ll miss the best things if you keep your eyes shut.” That’s why, no matter what your age is, you should never stop ...