Agriculture in Syria started with a bang as a fragmented comet slammed into the Earth's atmosphere over Abu Hureyra, say researchers.

A study of 10,000-year-old skeletal remains from burial sites in northern Chile suggests violence was a regular part of life among ancient hunter-gatherers.

A 9,000-year-old burial plot upends long-held ideas about hunter-gatherers. Between 30 and 50% of hunters in these populations were female, researchers say.

Ancient artists used ochre, one of Earth's oldest materials, as a red paint, but researchers have only now figured out how they made it.

The negative impact of human activity on the planet didn't start with fossil fuels, say researchers. They push that milestone way, way back.

New findings may explain a population paradox that has dogged researchers.