More than 40 percent of the Mediterranean Sea's sharks and rays face extinction there because of overfishing and other human impacts, according to a new report.

The annual light show promises to be crystal clear this weekend, with the moon setting before the Leo constellation climbs into the sky.

Pachyderm power budges a cyclone-shocked bus, a priceless map is found, CSI-style crime fighting goes to church, London burns, and more.

As the Maya elite class grew larger?and less secure?its burgeoning demand for animals of symbolic value may have caused a drop in large mammal populations.

Nigersaurus?an elephant-size dinosaur with a featherweight skull and a mouth that worked like a lawn mower?suggests that long-necked plant-eaters browsed like cows.

Dolphins have always liked the warm Mediterranean. Why are some of them now swimming around the Baltic Sea and playing with boats in northern Germany?

The rising sea is eating away at Copacabana and Ipanema?Brazil's most famous beaches.

Moderate aftershocks struck northern Chile Thursday after a major quake damaged 4,000 homes and killed two people.

Tiny machines designed to smell and act like cockroaches were able to influence real bugs in their search for shade, a new study shows.

Rocky planets are forming?and occasionally colliding?around a nearby star, scientists say. The find suggests that Earthlike planets may be far more common than previously believed.

A cyclone has killed at least 1,100 people in Bangladesh and forced more than half a million evacuations, a local news agency and officials report.