If it were a phone call, we might call it a butt-dial: A strong radio signal that set off speculation about possible alien origins is now believed to have come from a terrestrial source.
This time of year, the endangered bighorn sheep of Southern California gather at desert watering holes. Conservationists use these huddles to see how efforts to restore the population are going.
The Pioneer Fire in the Idaho backcountry has been burning since July, but it exploded in size this week during hot, dry weather. Smoke from the blaze has created a monstrous cloud visible from space.
There's new and detailed data on the impact of genetically modified crops on pesticide use. Those crops replaced insecticides, and, at first, some herbicides. But herbicide use has rebounded.
A "significant explosion" hit the SpaceX launch pad at Cape Canaveral early Thursday, destroying the unmanned rocket that was set to launch this weekend.
China has been creating artificial islands out of reefs in the South China Sea. Environmentalists say the process is killing off coral and giant clams.
Analyzing an event by breaking it down into details might seem like a good way to predict the outcome, but social science research suggests that when most of us do it, we make worse predictions.
That's what 76 percent said in a recent Kaiser Family Foundation survey. Half the respondents also said they'd be uncomfortable traveling to places in Florida where mosquitoes are spreading Zika.
The president warns that climate change can undermine decades-long conservation efforts. He spoke at an annual summit that brings people together to discuss how to keep Lake Tahoe blue.
If you've ever yelled at a slowpoke blocking your way on the left lane of a crowded highway, your anger is now justified.
Coal companies in the West have mined an area the size of New York City — more than 400 square miles. Now they have to clean it up, and it's given rise to a whole new reclamation economy.
Minnesota's governor has ordered new restrictions on the use of neonicotinoid pesticides, which have been blamed for killing bees. Many details of the plan, however, remain to be worked out.
Researchers have failed repeatedly in their efforts to slow or halt Alzheimer's disease. But there are hints that an experimental drug can do what previous medicines could not.
Tiny devices sent into the human body for diagnosing and treating diseases run on batteries that may contain toxic materials. Researchers have come up with a safer battery made of natural pigments.
Two hurricanes in the Pacific — Lester and Madeline — are threatening Hawaii. Meanwhile, Gaston is crossing the open Atlantic. The space station got a good view of all three of them on Tuesday.
The extended drought in California has farmers looking for ways to use less water. Among them, growing feed indoors using hydroponics. The new diet is making some Central Valley sheep very happy.
Last year's forest fires have produced a bumper crop of coveted morel mushrooms in Montana's northwestern forests. But the Forest Service isn't issuing commercial licenses in some prime picking spots.
The World Health Organization released new treatment guidelines that acknowledge an entire class of antibiotics is now all but useless against the sexually transmitted disease.
When humans talk to dogs, the canine brains seem to separate the meaning of the words from the intonation used and to analyze each aspect independently.
Russian astronomers detected an unusual radio signal last year. The SETI Institute says its too soon to say if the signal came from intelligent lifeforms — but they're checking it out.