In some places, the ocean is almost 7 miles deep. Scientists exploring the ocean floor have found strange sea creatures, bizarre geologic formations and records of Earth's history.
Give yourself time and you can see in the dark.
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School integration is often thought of as something that took place in the 1960s. But the first black student to desegregate a school by court order was an Iowa girl named Susan Clark in 1868.
Have a cat who just loves to scratch? Declawing is a major surgery that comes with serious long-term side effects – and it might not solve the problem anyway.
Fighting fire during training session.
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What exactly is inside those red fire extinguisher canisters, and does it work better than water?
Researchers pour a barrel of hagfish into a holding tank aboard a research vessel about 20 miles off the coast of Portsmouth, New Hampshire.
AP/Steven Senne
Birds spend a lot of time and energy singing, but they don't do it the same way in every season of the year. And some can't sing at all. What's the purpose of birdsong?
People worked for healthy teeth long before nylon brushes hit the market.
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