Video Lectures

Every day, at the Institute for Advanced Study and elsewhere, scientists and scholars are exploring the frontiers of knowledge, from the structure of the universe to the patterns of human thought. But what is the shortest path from A to B, if you do...

A knot is simply a tangled loop in ordinary three-dimensional space, such as often causes us frustration in everyday life. Knots are also the subject of a rather rich mathematical theory. In the last three decades, it has unexpectedly turned out...

Bethlehem, Pennsylvania, was founded in the 1740s as a utopian religious community. At the turn of the twentieth century, it became one of the iconic steel towns of industrial America, a destination for working-class immigrants and the producer of...