Emerging from the torpor of winter means a busy spring for these bears, bees, bats and squirrels.
Culture shock is fading, say the handlers of Bao Bao, the panda from the National Zoo in Washington, as she settles into the land of her ancestors.
During the two years that the Rosetta spacecraft stalked the comet, it observed cliffs that collapsed, boulders that moved and eruptions of dust and gas.
Much of the ice also appears to be thinner than normal — further signs of climate change’s effects on the region.
The president’s stance on science funding could have serious consequences.
“Sheefs” will test the limits of current regulations, experts say, as embryolike structures are created directly from stem cells.
Once a breakfast staple, this white, seed-packed variety of the fruit has all but disappeared. Yet there are hints of a small-scale revival.
Scientists disagree about whether bringing extinct species back from the dead will result in a net loss of global biodiversity.
In general, the large size of some prehistoric animals in comparison to their modern counterparts had to do with evolutionary opportunity.
Patients who took the drug, Repatha, were significantly less likely to have heart attacks or strokes, researchers concluded. But its high cost will be an issue.
The Platte River in Nebraska is an important layover for hundreds of thousands of the birds as they head toward their summer homes.
Dr. Rowland, who had a special interest in A.L.S., or Lou Gehrig’s disease, refused to be interrogated by investigators in the McCarthy era.
A lower-cost vaccine provides strong protection against rotavirus, a diarrheal disease, and could be particularly useful in poorer countries, researchers said.
A group of researchers created a ruse to draw attention to the seamy side of open-access journals, some of which will publish just about anything for a fee.
The White House is preparing to dismantle major policy actions of the Obama era, including a plan to close hundreds of heavily polluting power plants.
The introduction of a new class of cholesterol drugs led some experts to believe that we might be able to virtually eliminate heart attacks. But it hasn’t worked out that way.
Researchers hope a study will shed some light on a cancer treatment, using radiation, that is growing in popularity and surrounded by questions.
Flowering plants that are blue are rare in nature. But Texas bluebonnets put on an annual show in pastures, parks and highway medians.
When the winter tide goes out on a northern Canadian bay, some Inuit clamber into the ice caves below to harvest fresh food.
After contracting a rare case of the mumps as an adult, a man receives bad news about his fertility.
Researchers recorded more than 300,000 meteoroid trajectories since 2010 to depict the drifting paths of meteor showers that Earth passes through.
The artist Eduardo Kac and Thomas Pesquet, a Frenchman on the International Space Station, have created art in space.
Dr. J. Mario Molina, one of the few insurance executives to criticize the House bill publicly, says it could harm insurers and patients alike.
A Ph.D candidate and a computer program that took five minutes to run may upend the dinosaur classification system that has been used for more than a century.
The problem is more likely to occur with textured implants than with smooth implants, the F.D.A. said, and it is usually treatable and not often fatal.
Even fully fledged chicks will hound their parents for food, researchers find.
Since 2001 the number of grandparents has grown by 24 percent, partly as a result of the aging of the baby boom generation.
Thousands of films showing U.S. atmospheric nuclear tests between 1945 and 1962 have been declassified. Scientists are studying them and posting them for all to see.
Films of the tests conducted in Nevada and the Marshall Islands from 1945 to 1962 are being restored and released to the public.
Much of the agency’s state-level work would be eliminated or sharply reduced by President Trump’s proposed budget, which cuts the E.P.A. more than any other agency.