Your gadgets run on direct current, but the electricity in your home is alternating current. What’s up with that?

Water is at the heart of the disruption wrought by climate change. The seas, once seen as vast and stable, are now ...

Ricci map - detail from a China panel. All images via Wikipedia. In 1602, the Wanli Emperor of the Ming dynasty had a big ...

Far over the misty mountains cold,” Dad read. Every evening before my light was turned out, he read me a story about a hobbit ...