When did animals first come into being? It might have been millions of years earlier than we thought.

In a 120-million-year-old rock in Northeast China, paleontologists made a remarkable find.

Nineteenth-century visual images, then, had power to move people to action, to convert ideas into policy.

On September 18-21, OutBeat, billed as "America's First Queer Jazz Festival", took place in Philadelphia.

Modern health authorities combating the Ebola virus in West Africa might look to medieval infection control for inspiration.

What if the rise in marijuana smoking prompted by legalization brings more than just tolerable negative side effects? What if it is actually good for public health?

On the eve of a new Twin Peaks series, it's instructive to return to early scholarly attempts to make sense of the show.

The Supreme Court of Colorado, where marijuana use is now legal, is considering whether workers can be fired for smoking pot outside of working hours.

In 1676, Danish astronomer Ole Rømer predicted that an eclipse of one of Jupiter’s moons would occur ten minutes later than expected. How did he know?

The birds do it. The butterflies do it. And now we know that the dragonflies do to it, too: long-distance migration.