Chimpanzees bear genetic adaptations that help them thrive in their different forest and savannah habitats. Some of the ...

The future of Ukraine. A looming trade war. Stock market turmoil. Rising prices for consumers in the midst of thousands of layoffs, with more to come. Whether your politics make you anxious or ...

Modern humans descended from not one, but at least two ancestral populations that drifted apart and later reconnected, long before modern humans spread across the globe.