There's not enough good evidence to make the call as to whether an annual pelvic exam is a good screening tool, the U.S. Preventive Services Task Force says.
They don't have wings, but bacteria sure can fly. Researchers at MIT say that tiny bubbles trapped by raindrops play a part in launching bacteria on long-distance flights.
Many of America's farmers are successfully fending off environmental regulation, from the Obama administration's Clean Water Rule to a lawsuit in Iowa that's aimed at reducing nitrates in rivers.
Opponents lost their bid to stop the Dakota Access pipeline, but their effort has energized others. Pipeline protests are expanding across the country.
NOAA's new weather satellite is carrying the first lightning detector ever parked in orbit over Earth. It has sent back its first images of real-time lightning storms in the Western Hemisphere.
Lyme disease is spreading, and this summer is shaping up as a whopper. Why has the tick-borne illness gotten so bad? The answer traces back to something the colonists did more than 200 years ago.
Medical breakthroughs that were covered by newspapers were often later disproved by more comprehensive research, a study finds. That's a problem for scientists and journalists.
It's not clear whether spending a lot of time on Facebook, Snapchat or Instagram leads to social isolation, or whether the lonely seek solace in social media.