Two large studies reach opposing conclusions about why males stay with females

Light's twistiness allows researchers to measure rotating object's speed

Genetic studies push back age of men's most recent common ancestor

After a week in the wild, people went to bed and got up earlier

Sharing a midday meal with friends could lead later to errors at work

Fast ascent of molten rock could foretell future eruptions

Enceladus' chilly jets ebb and flow in time with the planet’s tug

In India, narrow strips of wild land connect small groups of cats

The demonstration helps scientists begin how molecules in plants and animals naturally alter their shapes

Atmospheric change and rise of predators caused burst in complexity of life

Girl, who was sacrificed, may have been sedated by alcohol, coca leaves

Insect damage to ancient bones reveals length of ‘summer’ during the last ice age

Underground storage of liquid waste from these mining operations can make an area more vulnerable to tremors

They also answer to those chosen ‘names’

They also answer to those chosen ‘names’

Data suggest a web of lake organisms might thrive deep under ice; scientists struggle to make sense of the new report

In 12-year lab study, moist soil samples released less greenhouse gas as they warmed

Probe captures planet from 1.4 billion kilometers away

Slumber waxes and wanes along with lunar rhythm

Intestinal changes could explain rapid improvements in diabetes