”Our newly-devised model stretches the galaxy formation time by a several billion years, making the Universe 26.7 billion years old, and not 13.7 as previously estimated,” said University of Ottawa’s ...

Around 12,800 years ago, Earth collided with fragments of a disintegrating comet, triggering Younger Dryas climate change.

The poorly understood ‘matalafi’ -- the homogenate of Psychotria insularum leaves (fresh leaf juice) -- is widely used in Samoan traditional medicine.

New paleoclimate evidence shows that around 1.1 million years ago, the southern European climate cooled significantly and caused an extinction of archaic humans on the continent.

The maritime expansion of Scandinavian populations during the Viking Age was a far-flung transformation in world history. Margaryan et al sequenced the genomes of 442 humans from archaeological sites ...