Sara Goudarzi

Dominant chimps evaluate risks of crossing a road before leading the rest of their group to move forward.

If they seem like teenagers don't take your feelings into account, it's probably because they can't.

The equations that describe the pull between planets can be applied to how insects spread disease from flower to flower.

Study finds conditions conducive to summer vacations are extending into spring and fall.

A team of conservationists found 100 slaughtered elephants near Zakouma National Park, Chad, one of the most undamaged wilderness areas in Africa.

Test aircraft with 22-foot wing span gets aloft on hydrogen fuel cell.

Scientists learn how the brain assigns meaning and files the things our eyes see.

In a distant past, Earth might have flipped on its side to keep its balance. And it could happen again.

Extra light exposure during the day helps keep you alert, a new study finds.

Single-celled amoebas, the simplest creatures known, stick with kin in times of need.

Roughage keeps you regular in an unlikely way, new study shows.

Smokers trying to quit start to feel withdrawal symptoms within the first half hour of quitting.

Bouncing their legs like pogo sticks, elephants at high speeds are considered to be running.

Increased levels of carbon dioxide may help some trees in battling ice storms.

A new experiment finds the force that holds all atoms together is weaker than once thought.

Teenage girls have long aspired to the perfect bodies they see in the media. Now the obsession has crossed genders.

In only 15 years, mussels evolve to protect themselves against invasive crabs.

A new research facility in China will look like a cell structure both inside and out.

Subtle differences make a verb sound more like a verb and make noun more "nouny."

Research confirms infants can spot arithmetic errors.

Male nightingales that interrupt their opponents during singing have better chances of finding a mate.

Bees look for flower colors that signify warm temperatures when choosing their dining spot. And they remember what they learn.

As the planet warms and heat waves become more intense, air conditioners will inject additional carbon into the air, a gas known to insulate the planet and contribute to global warming.

Small volcanoes discovered east of the Japanese Islands on the western Pacific Ocean floor formed through an unrecognized type of volcanism.

About 10,000 years ago, the planet warmed. Extra space dust had been suggested as a cause. Can't be, scientist says.