Scientific American

The evolutionary history of humans explains why physical activity is important for brain health

An update to the classic “double-slit” experiment paves the way toward a novel strategy for quantum computing

Some avian species use tools and can recognize themselves in the mirror. How do tiny brains pull off such big feats?

Many chronic pain patients can be slowly tapered from the drugs without increasing misery

Even a galaxy teeming with star-hopping alien civilizations should still harbor isolated, unvisited worlds—and Earth might be among them