They would have hunted woolly mammoths.
China launched two missions on Monday within only a few hours of each other, and one has been declared lost.
People were raising cassowaries, the world's most dangerous bird, some 18,000 years ago, new research shows.
A Jupiter-sized world may be kicking up dust in the triple-star system GW Ori.
It was sealed off for 40,000 years.
The human body is really holding us back.
"This one is special as it is so bright."
North America's ancient predators make today's look small.
Strengthening case for natural origin.
The female orca known as L47 was last seen in February.