World Topics

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 ...

Jul 17, 2015

Oldest lizard embryos discovered in fossil eggs

Tiny fossil eggs long thought to harbor the embryos of dinosaurs or primitive birds in fact contained unhatched baby lizards — the oldest ever found, scientists said Wednesday. The eggs, roughly the size of a sparrow egg, are about 125 million years old, and ...

Jul 17, 2015

Earth called 'gravely ill' after annual climate checkup

In their detailed annual physical of Earth’s climate, U.S. scientists say the world is in increasingly hot and rising water. The National Oceanic and Atmospheric Administration (NOAA) and the American Meteorological Society’s annual state of the climate report, released Thursday, delves into the details ...

Jul 16, 2015

Study claims stem cell advance for mitochondrial disease

Scientists said Wednesday they had taken a key step toward stem cell therapy for rare mitochondrial disorders, passed on from mother to child. They “corrected” harmful mitochondria in skin cells taken from patients to create healthy, pluripotent stem cells — versatile cells that can ...