Why can some people sleep through a jackhammer at the window, while others waken with the lightest whisper? Host Rachel Martin speaks to Johns Hopkins Sleep Disorders Center researcher Jeffrey Ellenbogen about his new study on how noises interrupt sleep.
We spend about one-third of our lives sleeping, but much of that function remains a mystery. Weekend Edition Sunday is asking some pretty fundamental, yet complicated, questions about why we do it and why we can't seem to get more of it.
Dr. Matthew Walker says the question of why we sleep remains "that archetypal mystery."
Walker, the principal investigator at the sleep lab the University of California, Berkeley, works with patients who suffer from sleep abnormalities. He says the complexity of sleep makes the research that much more fascinating.
The effects of climate change often happen on a large scale, like drought or a rise in sea level. In the hills outside Missoula, Mont., wildlife biologists are looking at a change to something very small: the snowshoe hare.
Life as snowshoe hare is pretty stressful. For one, almost everything in the forest wants to eat you.
Alex Kumar, a graduate student at the University of Montana, lists the animals that are hungry for hares.
"Lynx, foxes, coyotes, raptors, birds of prey. Interestingly enough, young hares, their main predator is actually red squirrels."
Before summer slips away, North Country Public Radio's Brian Mann decided to take a day off from work for one last hot weather canoe trip in upstate New York. With his wife Susan, Brian paddled and trekked through the Ausable Marshes in the Champlain Valley. He sent back this audio postcard.
Glaciers in the European Alps pose a scientific mystery. Now, they started melting rapidly back in the 1860s, and in the span of about 50 years, some of the biggest glaciers retreated more than half a mile. Nobody could explain why. Now, a new study suggests the glaciers melted because they were covered with soot from the Industrial Revolution. NPR's Richard Harris reports.