The toxic legacy of wartime dumping could take centuries to clean up.

Encephalitis lethargica killed five hundred thousand people, and scientists still can’t agree on what it was.

A staggering amount of brain activity takes place in this arena, where “countless signals come together to form a unified experience of reality.”

As it turns out, beneficial mutations are far more common than a 50-year-old theory predicted, but the world changes too fast for them to stick.

The glass harmonica’s bad reputation was entirely undeserved, though.

• The orb is a remnant of a secreted cuticle that allows a sea anemone to attach itself to a rock.

A combination of vicious weather and human error ended up tragically sealing her fate.