Along the coast of Baja, California, a new study finds that parasites outweigh top predators. What does this mean for ecology, and what is the story with “castrating parasites”?

Coral reefs are the ocean’s biodiversity hotspots, but a new study finds that one-third of reef-building corals are under some threat of extinction.

How does momma croc know when to dig up the young? How do the embryos know when to start hatching? The secret’s in the song…

Injecting a protein in the brain stifles the drive to drink among lab rats; one dose lasts three hours or more. Does GDNF offer a new angle on alcoholism?

Mice can tell the sex, mating status and identity of another mouse — all from sniffing urine. A new study of how mice read pheromones also gives insight into the human sensory apparatus…

Minute sand dollar larvae, tasty morsels in a sea of famished fish, have a clever way to help ensure their genes are passed to the next generation.

Presto-chango! Caterpillar larva looks like a bird dung — and then like a leaf. New study points a finger at hormonal balance…

In the brain, dopamine carries signals that make us eat, take drugs and have sex. New research shows that dopamine plays a key role in rewarding mice for aggression.

Japan says it must kill hundreds of whales each year to do “research” on them; but science has plenty of ways to study whales without killing them. Digital-recording tags, whale songs, even whale scats, are the best ways to study these mysterious marine mammals.

New discovery shows how all animals store fat in cells, could lead to advances in fight against obesity or diabetes. Funny, maybe storing fat is a good thing.