The popularity of antlers as rustic décor is threatening deer and elk in the Pacific Northwest. The animals can naturally shed antlers, but some people harass or kill animals to get at prized racks.
The push for cleaner fuels in Oregon and Washington could bring the region more crude oil and a new refinery along the Columbia River. It would be the first refinery on the West Coast in 25 years.
To stop elephant slaughter in Africa, zoologist Sam Wasser spent years extracting DNA from elephant dung and tissue. Much of the world's poached ivory, he discovered, comes from just two hotspots.
Hormones from medical treatments wind up in wastewater, and that can be a problem. Some scientists think a version of a household chemical, hydrogen peroxide, could be part of the solution.
Individual differences in the brain's working memory could help explain why some teens are especially impulsive about sex. Having engaged parents helps reduce the risk.
A quarter of U.S. physicians are older than 65, and there are no national guidelines for assessing late-career skills. Some say the lack of oversight, especially for surgeons, is cause for concern.
An expert forager has a video and an app for finding weeds to make the ultimate locally grown salad. But even a master foraging app might not lead an amateur to success.