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Researchers found that African grey parrots voluntarily helped a partner get a food reward by giving the other bird a valuable metal token that could be exchanged for a walnut.

We know that some knots hold better than others, but the why of it hasn't been so clear. Special fibers that change color under strain are providing some answers.

It hopes to become the fourth nation, after the United States, China and Russia, to send people into space. The mission is targeted for 2022.

Tumbleweeds are common in the desert plateau of eastern Washington state. But a 12-foot high stack of them trapped cars for hours.

A new study shows that young children have a negative reaction to beards, but that changes as they get older.

In some historical Nativity scenes, the shepherds have grossly enlarged thyroid glands — also known today as goiter. It's an apparent symbol of their poverty and iodine-deficient diet.

The world's tallest active geyser is Steamboat Geyser, in Yellowstone National Park. It's been on a real eruption streak lately and 2019 saw the most recorded eruptions in a calendar year.

It will now be easier for the government to inspect shops where workers might get exposed to lung-damaging silica dust. But it's unclear how much it will affect countertop workers.

The initial results from an ambitious mission to get a spacecraft close to the Sun are shedding new light on some old mysteries about our closest star.

Slabs of engineered quartz are cut to order in thousands of shops around the country that may not adequately protect workers from dangerous levels of the lung-damaging contaminant.

Some workers are sick — some even died — after cutting stone countertops for kitchens and bathrooms. The material is cut to order in thousands of shops that may not understand the dangers.

The story of the first worker in the U.S. to suffer lung damage after cutting a new kind of countertop material shows the way a workplace hazard emerged in this country.

Common vampire bats might drink the blood of their prey, but it turns out that these fearsome beasts can be warm and fuzzy when it comes to their fellow bats.

Three researchers won the Nobel Prize in Chemistry this year for their work that led to the development of lithium-ion batteries. This wraps up this year's science Nobels. All the winners were men.

The prize was awarded jointly to John B. Goodenough, M. Stanley Whittingham and Akira Yoshino." Lithium-ion batteries have revolutionized our lives," the Nobel Committee said.

In a letter, they urge the Labor Department to ensure safe levels of silica dust at workplaces that cut popular "engineered stone." At least 18 workers have recently suffered severe lung damage.

Irreversible lung disease has started to show up among young workers who cut, grind and polish countertops made of increasingly popular "engineered" stone. The material is more than 90% silica.

A surprisingly large planet orbiting a small star defies the conventional wisdom about how planets are born. But a dark-horse idea from more than 20 years ago could explain it.

Labs are churning out more and more synthetic DNA for scientists who want to use it to reprogram cells. Some say the technology has outpaced government safety guidelines put in place a decade ago.

Researchers estimate that the bird population has fallen by a quarter since 1970. More than 90% of the loss can be attributed to just a dozen bird families, including sparrows, blackbirds and finches.