"Human beings are the only species that deliberately deprive themselves of sleep for no apparent gain," says sleep scientist Matthew Walker. His new book is Why We Sleep.
The Anxiety and Depression Association of America estimates anxiety-based school refusal affects 2 to 5 percent of school-age children. It is often triggered by an underlying mental health issue.
What does a "normal" brain look like? Something a lot different when researchers make sure that study participants reflect the race, education and income levels of the U.S. at large.
Dealing with a fire or other natural disaster is hard on anyone, from evacuation to aftermath. And people with physical or developmental disabilities have particular needs, say emergency planners.
As wildfires spread through Northern California counties, clouds of smoke and ash are spreading, too, far beyond the flames. Air quality officials have a database that's searchable by ZIP code.
After many setbacks for genetic therapies, advisers to the Food and Drug Administration recommended approval of the first gene treatment for an inherited form of blindness.
A sampling of our stories about the world's girls: A 15-year-old died in a menstrual shed. A former child bride went back to school. Afghan women say no to a restrictive school uniform.
Students, health care providers and parents all have a role to play in making sure college freshmen know how to get the health care they need when they're away from home for the first time.