World Topics

Ample shut-eye seen lessening Alzheimer's risk in seniors

Jul 21, 2015

Ample shut-eye seen lessening Alzheimer's risk in seniors

New research suggests poor sleep may increase people’s risk of Alzheimer’s disease, by spurring a brain-clogging gunk that in turn further interrupts shut-eye. Enough sleep is important for good health generally, but a series of studies presented Monday at the Alzheimer’s Association International Conference ...

Scientists puzzle over smooth young plains on Pluto

Jul 18, 2015

Scientists puzzle over smooth young plains on Pluto

New pictures relayed by the first spacecraft to visit Pluto show odd polygonal features and smooth hills in a crater-free plain, indicating the icy world is geologically active, New Horizons scientists said on Friday. “We had no idea that Pluto would have a geologically ...

Jul 17, 2015

Polar bears can't conserve energy when fasting

A study of an Alaska polar bear population in summer concludes the bear’s biology will not help stave off starvation in the face of global warming. The study of southern Beaufort Sea polar bears by university, federal and private researchers over three years concludes ...