SoT 123: Jellyfish on a Space Shuttle

A new study shows that while the brain is asleep, it washes away buildups of wastes and toxins.

In the early 90s, about 60,000 jellyfish were born in space. When they came back to Earth, things didn't quite work out.

A test of alleged yeti samples uncovers an extinct polar bear/brown bear hybrid.

A new law of biology: all mammals pee for about 21 seconds. Yes, a team of scientists walked around a zoo with a stopwatch.

A new strain of Clostridium botulinum, the bacteria that produces one of the deadliest neurotoxins we know of, has been discovered. Researchers have taken the unusual precaution of whithholding key details of the bacteria's genome.