At some point before the year 200 A.D., workers demolished a building in the ancient Roman city of Londinium, and much like ...

Are you a puzzle enthusiast, a dissectologist to be precise, someone who loves challenging themselves with a complex jigsaw ...

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 ...