Grasslands are some of the most at-risk terrestrial environments, and North American populations of bison and prairie dogs have sharply declined since European arrival. The study highlights the role of the grasslands’ small yet most helpful residents, with significant implications for conservation efforts.

Ancient poop fossils preserved molecules thanks to iron carbonate, revealing hidden details of prehistoric ecosystems.

A cup of coffee does more than perk you up—it can help get things moving, too. But timing matters if you want the best results.