Using stinging tentacles and wide mouths, large coral polyps in the Red Sea have, for the first time, been discovered eating jellyfish nearly as big as they are.

Dr. Horrible, take note: A light-sensitive chemical fed to tiny worms called nematodes caused the creatures to "freeze" when zapped with ultraviolet light, a new study says.

A "saber-toothed cat in armor" and a pancake-shaped predator are among five strange, dinosaur-era crocodile cousins discovered in the Sahara, archaeologists say. Meet BoarCroc, PancakeCroc, DuckCroc, RatCroc, and DogCroc.

Fossils of five "oddball" crocodilian ancestors found in the Sahara suggest that the bizarre beasts ruled the southern landmass of Gondwana about a hundred million years ago, paleontologists say.

Shoddy oversight by the Army Corps of Engineers led to massive flooding in Hurricane Katrina, a judge ruled Wednesday. The decision could cost the federal government up to two trillion dollars, one expert predicted before the ruling.

Ancient Tibetan art and manuscripts recovered from caves carved into sheer cliffs could be linked to the fictional paradise Shangri-La, says the team that made the discovery.

A Saturn moon takes center stage, a star is born, a space shuttle gets a step closer to its curtain call, and more in the week's best space pictures.

The world's oceans, which normally gobble up carbon dioxide, are getting stuffed to the gills, according to the most thorough study to date of human-made carbon in the seas.