Contrary to what popular media portrays, we actually don't know much about what sharks eat. Even less is known about how they digest their food, and the role they play in the larger ocean ecosystem.

The Chagos Archipelago is one of the most remote, seemingly idyllic places on Earth. Coconut-covered sandy beaches with incredible bird life rim tropical islands in the Indian Ocean, hundreds of miles from any continent. Just below the waves, coral reefs stretch for miles along an underwater mountain chain.

Two fossil teeth from a distant relative of North American gophers have scientists rethinking how some mammals reached the Caribbean Islands.

Some shark species, such as the basing shark and the spiny dogfish, are in populational decline in the Costa Brava, and even blackspotted smooth-hounds can have disappeared due to the fishing pressure of this marine region in the Catalan coasts. The coincidence of fishing areas with the distributional natural habitat of the sharks worsens the risk of bycatches of sharks by the fisheries.

A weakened Tropical Storm Elsa dumped rain across Florida's northern Gulf Coast early Wednesday, sparing the state from significant damage as it churned toward Georgia with threats of flooding downpours and possibly tornadoes.