Scientists have uncovered surprising complexity in a tiny sensory structure found in comb jellies, some of the oldest animals on Earth.

Thirteen million years ago, a group of medium-sized monkeys known for guarding their territory among the treetops with fearsome "howls" started doing something new. These monkeys, among the oldest ...

Researchers create the first high-resolution molecular atlas of the fruit fly brain, revealing how lineage and birth order define neuronal identity.