Two new theories try to explain how the crescent-shaped sand mountains persist

Earth may face far warmer temperatures than previous estimates had indicated

DNA of deadly respiratory virus found in Saudi Arabian mammal

Simulation shows possibly contaminated areas, predicts populations at risk

Ancient Egyptians heated and hammered meteorite metal into ornaments

Brightness measurements can help gauge size, stage of evolution

Sugar and other chemicals keep Alaskan frogs from freezing completely

Trade-offs between studliness and survival keep less endowed sheep in the mix

The ballpark brings home plenty of science

Microbes caused discomfort in mice by activating nervous system, not immune response

Crows, house sparrows and other species judge when to flee the asphalt by average traffic rates rather than an oncoming car's speed

People who killed themselves had higher levels of specific gene

Ejections from stellar newborn move faster, differently than astronomers thought

Trees' capacity to sequester carbon dioxide from the atmosphere is dwindling

Livestock may be a 'reservoir' of germs that can infect people

The massive 2011 quake off Japan rocked deep inland bays in Norway

Barrier islands aren’t just for beach vacations – they protect coasts from storms and flooding

Only people who believe exertion zaps willpower get a boost from glucose

A night without sleep changes the brain and how appetizing people find high-calorie foods.

Growing coastal cities will be inundated by sea level rise