To celebrate Scientific American ’s 180th anniversary, we’re publishing jigsaw puzzles to show off some of our most fascinating magazine covers over the years. Take a tour here through the covers so ...

The new approach looks at the distribution of molecular fragments in material, allowing for broad surveys in degraded specimens ...

“I was the only one in the room. The number I’d been looking for showed up on the mass spectrometer. It was the most intense dopamine rush I’d ever had.” This is how Uche Medoh, winner of the 2025 ...