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." Join the experts at the Good Housekeeping Institute and get stoked about science! Discover incredible ...