When Texan high schoolers Samuel Skotnikov, Changyoung Kim, and Eeshaan Prashanth found out that their friend Aiden’s prosthetic leg was uncomfortable and difficult to use, they decided to make him a ...

Every species on the planet has a few evolutionary advantages that are key to survival. For us humans, it's the ability to use tools. Granted, we're not the only species that knows how to use them, ...

We’re celebrating 180 years of Scientific American. Explore our legacy of discovery and look ahead to the future. The 1925 writer helpfully explains what scientists still think is behind these ...