Close up of mastodon tusk
Science Snapshot: Mastodons on the Move
These Pleistocene Epoch giants likely traveled great distances each year to reach breeding grounds.
Science Snapshot: Mastodons on the Move
Science Snapshot: Mastodons on the Move

These Pleistocene Epoch giants likely traveled great distances each year to reach breeding grounds.

These Pleistocene Epoch giants likely traveled great distances each year to reach breeding grounds.

ice age
Composite image of earliest humans and wooly mammoths
New Evidence Complicates the Story of the Peopling of the Americas
Emma Yasinski | May 2, 2022
New techniques have shown that people reached the New World far earlier than the long-standing estimate of 13,000 years ago, but scientists still debate exactly when humans arrived on the continent—and how.
Illustrated map showing where evidence was found of the earliest humans
Infographic: Mixed Evidence on Human Occupation of the Americas
Emma Yasinski | May 2, 2022
Diverse lines of evidence point to humans’ presence in the New World long before the dawn of Clovis culture. But rewriting this chapter of human history raises many questions about how these early people came to inhabit these continents.
Image of the Day: Bear Bones
Sukanya Charuchandra | Aug 28, 2018
Modern brown bears carry DNA from extinct cave bears that lived during the Ice Age.
Productivity Paradox
Jim Daley | Jun 1, 2018
During the last ice age, there wasn’t much plant matter to eat on northern steppes, but herbivorous woolly mammoths were abundant. How did they survive?
Image of the Day: Ice Age HorseĀ 
The Scientist Staff and The Scientist Staff | Nov 29, 2017
Scientists have identified a new genus of extinct horse that lived in North America during the last ice age. 
Image of the Day: The Last Sloth
The Scientist Staff and The Scientist Staff | Nov 16, 2017
An artist’s impression suggests what the Caribbean may have looked like before humans arrived.