Even people who consider themselves casual or light smokers may be addicted to nicotine, researchers say.
With less snow, Scotland's mountain hares don't blend into their surroundings in winter. Researchers say it's bad news for animals in a changing climate.
"Wood warblers are an incredibly colorful and diverse group of birds, with more than a hundred species in total." Here's why.
Warm, moist rivers of air have a lot to do with massive holes in sea ice in Antarctica's Weddell Sea, a new study shows.
A new remote sensing method for studying the mineral olivine could help scientists understand the early evolution of the moon and Mars.
A new white paint keeps surfaces up to 18 degrees Fahrenheit cooler than their surroundings—almost life AC or a refrigerator, but without using any energy.
Two small dinosaurs with bat-like wings, Yi and Ambopteryx, couldn't take the air as well as birds.
A microrobot as small as a few human hairs can do flips through the colon to deliver drugs. Check out the video to see it in...
Pregnant women with severe or critical COVID-19 face increased health risks, both before and after delivery, researchers find.
If greenhouse gases continue apace, Greenland and Antarctica's shrinking ice sheets could add 15 inches to sea level rise by 2100, researchers warn.