Science

A Russian health official says nearly 1,000 people have sought help for injuries caused by a meteor that exploded in the sky, blasting out countless windows.
Video: Meteor crashes to Earth in Russia; nearly 1,000 injured
A meteor that scientists estimate weighed 10 tons streaked at supersonic speed over Russia's Ural Mountains on Friday, setting off blasts that injured some 1,000 people and frightened countless more.
The BBC looks at sex, from humans to seaweeds, and why a mystery bug two billion years ago invented sexual reproduction.
An earthquake was detected Tuesday in North Korea just north of a site where the country has conducted nuclear tests. Neither Pyongyang nor Seoul confirmed whether the tremor resulted from a widely anticipated third nuclear test, though an analyst in Seoul said a nuclear detonation was a "high possibility."
The U.S. is vulnerable to cyberattacks that could shut down financial services or destroy information that companies need for daily operations, the chairman of the House Intelligence Committee said Sunday.
Want to name Pluto's two tiniest moons? Then you'll need to dig deep into mythology.
Curiosity rover completes 1st drill into Mars rock
In a Mars first, the Curiosity rover drilled into a rock and prepared to dump an aspirin-sized pinch of powder into its onboard laboratories for closer inspection.
Tragedy for dinosaurs, opportunity for mammals, us
New research pinpoints how the torch passed from one dominant creature on Earth to another, from the brutish dinosaur to the crafty mammal.
150-foot asteroid will buzz Earth
A 150-foot-wide asteroid will come remarkably close to Earth next week, even closer than high-flying communication and weather satellites. It will be the nearest known flyby for an object of this size.
Mathematicians at the University of Central Missouri have identified the largest prime number yet, but good luck remembering it.