Vases found in Guatemala offer rare physical proof of tobacco use among ancient Maya, but with a twist: This time, they didn’t inhale.

From its origins in Arabia, the Muslim faith spread rapidly and developed a distinctive culture, including a form of art that has thrived through the centuries to be instantly recognizable ...

You've heard "leave no trace" when hiking—here’s the science behind why it’s crucial to leave wild environments the way you found them.

In less than three years on the job, Loeser has dealt with drought, flooding, and fire in quick and devastating succession.