Nestled as it is amid saguaro-studded hills, under a sky crisp blue by day and starry by night, you’d never guess Queen Valley, Arizona, is only 40 miles east of Phoenix. Its cozy homes surround a lush golf course, about four miles from a swath of state land known for four-wheeling, hunting, and bird-watching.

A mysterious but crucial step that coca plants use to build cocaine has been discovered, according to a group of biochemists.

Broadcast news and social-media sites have been aflame with reports about something called "meat glue."

A decade ago, Katherine Lucey oversaw a heavily subsidized $1,500 solar-light installation in the rural district of Mpigi in central Uganda. The 60-watt rooftop solar panel system could power three lights in the four-room, off-the-grid house.

The study, published in Nature Climate Change, examined rising ocean temperatures over the past five decades and compared them with a dozen different models used to project climate change.

If modern baseball can teach kids anything about science, it’s that steroids make things huge. We’ve all seen players with tree-trunk sized arms blast baseballs out of ballparks thanks to steroid hormones that bulk up muscle cells.

Groundwater depletion will soon be as important a factor in contributing to sea-level rise as the melting of glaciers other than those in Greenland and Antarctica, scientists say.

If the food police has a chief, it may very well be New York City Mayor Michael Bloomberg. His battles with the food industry are quickly becoming the stuff of legend. And his latest gambit is his boldest yet: Bloomberg just announced a plan to ban the sale of any sweetened beverage over 16 ounces at all restaurants, delis, and sports arenas in New York City.

Muddy Creek is nondescript, a narrow stream trickling through the sagebrush steppe of southern Wyoming. But like many Western waterways, it carries selenium, a natural poison that seeps from rocks and dirt and accumulates in the food chain much as mercury does.

At a press conference on May 29, labor and community leaders from Brazil, Ecuador, Nigeria, Angola, California and Texas revealed the true cost of Chevron’s operations in the places where they live.