science

NASA mission catches asteroid ejecting material into space

NASA's OSIRIS-REx mission arrived at near-Earth asteroid Bennu a year ago, and the spinning top-shaped space rock has been full of surprises. The latest findings now classify it as an active asteroid with observable events happening on the surface.

This is the ultimate dinosaur road trip

Eighty million years ago, a ferocious predecessor of Tyrannosaurus Rex stalked the western shore of an ancient seaway that flooded through North America, slicing the continent in two.

Massive waterfall formed on Greenland's ice sheet

What may have been the world's tallest waterfall briefly formed on Greenland's ice sheet last year, draining a meltwater lake of 5 million cubic meters of water -- equivalent to 2,000 Olympic-sized swimming pools -- in just five hours.

Global emissions will hit another record high this year

Carbon dioxide emissions are expected to reach another record high this year, a new report found Wednesday, with scientists warning the world is losing time to make the drastic reductions needed to avert a climate catastrophe.

Study: Plague probably didn't wipe out Roman Empire

Plague is often depicted as shifting the course of human history, but scholars say an outbreak that has been blamed for the demise of the Roman Empire likely didn't kill half the world's population in just a few years.

Supreme Court won't throw out climate scientist's defamation suit

The Supreme Court decided Monday not to intervene in a defamation suit brought by prominent climate scientist Michael Mann against National Review, a conservative magazine he sued in 2012 after it criticized him, accusing him of "misconduct" and data "manipulation."

This is one place on Earth where no life can exist

Life exists in extreme environments on Earth, from arid deserts and frozen tundras to thermal, toxic vents in the deepest reaches of the ocean floor. But it can't exist on every inch of the planet and scientists have discovered a place in Ethiopia where life can't find a way, according to a new study.

Hungarian scientists may have found a fifth force of nature

Physics centers essentially on four forces that control our known, visible universe, governing everything from the production of heat in the sun to the way your laptop works. They are gravity, electromagnetism, the weak nuclear force, and the strong force.

Rover explores the solar system's oceans

Astronomers have uncovered increasing evidence that some bodies in our solar system, like Jupiter's moon Europa and Saturn's moon Enceladus, are actually ocean worlds.