Mongolia's Tsaatan reindeer herders depend on munkh mus, or eternal ice, for their livelihoods. Now, soaring global temperatures may be threatening that existence.
New research suggests it was climate-related drought that built the foundation for the collapse of one of the most powerful civilizations in the ancient world—the Assyrian Empire, whose heartland was based in today’s northern Iraq.
Paleontologists have used modern tools to identify the origins of a few fragments of teeth found more than four decades ago by a schoolteacher in the Yukon.
An evolutionary biologist who studies how clams and other animals collaborate with algae to thrive in oceans around the world has won a prestigious fellowship.