A century-old indicator that has helped predict the direction of the U.S. stock market is signaling more pain ahead for battered investors. Here's how it works.

The deceptively simple Kakeya conjecture has bedeviled mathematicians for 50 years. A new proof of the conjecture in three ...

In “Red Scare,” Clay Risen shows how culture in the United States is still driven by the political paranoia of the 1950s.

This modern era of American book-phobia crashed down on my head (again) this week while meeting with students at the ...