There is more to sex than male and female. For some species there are hundreds and even thousands of sexes and mating types.

A study released this past week reports that oceans absorbed 60 percent more heat than previously thought. The study estimates that for each of the past 25 years, oceans have absorbed an amount of heat energy that is 150 times the energy humans produce as electricity annually.

We love watching horror movies and getting scared in haunted houses. But why? This scientist has spent the past 10 years investigating just this question.

Just because you don't have the flu doesn't mean that your aren't teeming with viruses inside and out. But what are all these viruses doing, if they aren't making you sick?

Last year, in its Grand Finale, the Cassini spacecraft dove repeatedly between Saturn and its rings. This week, 6 teams of researchers published new research based on Cassini's final days and those daredevil dives.

We know more about the surface of the moon than about Earth’s ocean floor. But analysis of core samples from the deep seabed has given us insights into climate change, Earth’s history, and the key conditions for life.

A balloon mission flying over the North Pole captured 6 million images of these bright blue noctilucent clouds in their home in the upper atmosphere.

These scientists say the world needs more swamps, bogs, fens, marshes and other types of wetlands.

These boxy satellites, small enough to fit in a backpack, are currently trailing thousands of miles behind the InSight spacecraft on their way to Mars.

Contrary to popular thought, birds wintering in the tropics survive the winter better than birds wintering in the U.S. That's despite the fact that tropical wintering birds migrate 3 to 4 times farther.