More than 8,000 photos capture San Francisco's counter culture and pivotal moments in history. But who was behind the camera?

Zavier, 14, Tauranga, New Zealand. Great question Zavier, and one that palaeontologists (scientists who study fossil animals ...

“All systems in your body require stress for good health. Stress stimulates the body to adapt and adaptation creates ...

By a very small margin, Spinosaurus is currently thought to have been the largest carnivorous (meat-eating) dinosaur, ...

Contexto is one of the nerdiest word games out there. The game tasks you with finding the word of the day by showing how close other words you guess are to it. This is measured by analyzing ...