Doctors and parents often miss the signs of female athlete triad syndrome — low energy, low bone density and irregular menstruation in an otherwise healthy-looking girl or teen.
Tiny island nations, Latin American developing countries, and even non-joiners like Switzerland have all found more power and influence in climate negotiations after forming or joining a group.
Efforts to change the mountain's name back to Denali date back to 1975. The White House says changing the name back "recognizes the sacred status of Denali to generations of Alaska Natives."
An Australian bay has gotten a bit too crowded for the local octopuses, who have been fighting and bullying each other. They now appear to be hurling shells as weapons — and there's video evidence.
With wingspans over 9 feet long, California condors are so big that they're at risk for electrocution when they fly into or land on power poles. One San Diego program seeks to change this behavior.
Renowned neuroscientist Oliver Sacks died Sunday at the age of 82. NPR's Arun Rath talks with his friend and colleague Dr. Orrin Devinsky.
His book Awakenings, about reviving patients from a catatonic state was turned into a 1990 film. He also wrote more than a dozen other books, including The Man Who Mistook His Wife for a Hat.
NPR's Rachel Martin reports on a year-long NASA mission to Hawaii.
Alaska's seabirds are suffering a steep decline in population. There's evidence linking this to climate change, a problem President Obama will address Monday when he visits the state.
A massive effort to test the validity of 100 psychology experiments finds that more than 50 percent of the studies fail to replicate. This is based on a new study published in the journal "Science."
Given two choices of attractive mates, female frogs pick the top vocalist. But add a third, inferior male to the mix, and females go for No. 2. The "decoy effect" shapes some human choices, too.
Guy Baker of England's Marine Biological Association tells the story of a postcard his group recently received. It was addressed to George Parker Bidder — the MBA's esteemed former president, dead for more than 60 years — and had been found in a bottle dropped in the North Sea more than a century earlier.
For 35 years, Dr. Bill Mahon has tended newborns and broken bones, given kids checkups and spinal taps. But luring new doctors with big debt and urban dreams to the redwoods is harder than it sounds.
For some insects, sound waves or vibrations are the real social media — high-speed rumbles sent through the air and along leaf stems to help the bugs claim territory, send warnings and find mates.
U.S. drug officials have traced a sharp spike in the already climbing death toll from heroin overdoses to an additive — acetyl fentanyl. The fentanyl is being cooked up in clandestine labs in Mexico.
There's a new contender in the century-old quest for perfect, guiltless sweetness: allulose. It's sugar — but in a form that our bodies don't convert into calories. Perfect? Not quite.
Researchers have been using muons to take a peek inside the nuclear reactors in Japan that melted down in 2011. The results could aid the continuing cleanup operations.
More than 70 percent of New Orleans residents say some progress has been made in the availability of medical services since the storm. Still, most say care for the poor continues to lag.
A lack of sleep can increase the risk of traffic accidents, heart attacks, diabetes and maybe even Alzheimer's disease, research suggests. Yet most people with sleep disorders don't get treatment.
Former spouses who disagree over whether their embryos can be destroyed have taken their case to court. In the process, one thing has become clear: how far the law lags behind reproductive technology.