PHOENIX — The sun began to set on a November Friday with temperatures in the 70s at the so-called “Arizona Beach,” Puerto ...

Deep in the heart of the matter, some numbers don't add up. For example, while protons and neutrons are made of quarks, ...

In South Africa ’s oldest township, volunteers in wetsuits jump into the thigh-deep water of the polluted Jukskei River to ...

Earth's climate hides regulatory mechanisms that could hold surprises. Researchers have just discovered a little-known ...

Straddling Italy and Austria, the Dolomite Mountains blend three languages, two identities and one breathtaking landscape – ...