Digital records allow social scientists to study online communities and the diffusion of innovation.

Knotted proteins are rare but more than just random occurrences.

An eclipse prediction in a book of astronomical tables helped Columbus out of a jam.

Listen in on some math radio and browse for science songs.

A well-known puzzle about bridges led to a pioneering paper in topology.

Flipping pancakes to stack them according to size can be a tricky business.

Pioneering studies of social networks and the Web's structure lead to a prestigious prize.