For over 2,000 years, Pueblo peoples occupied a vast region of the south-western United States. Chaco Canyon, a major centre of ancestral Pueblo culture between 850 and 1250, was a focus for ...

Woolly mammoths roamed parts of Earth’s northern hemisphere for at least half a million years. They were still in their heyday 20,000 years ago but within 10,000 years they were reduced to isolated ...

The passenger pigeon was once the most numerous bird in the world. In the mid-1800s, billions of these birds were flying over the forests of eastern North America. Yet in just half a century, they’d ...