The New Gender Divide

Data show that more women than men now enroll in college, but is there really a 'boy crisis'?

As a professor lectures, Clayton Winkelvoss slouches low in his seat, surrounded by a group of young women. When he volunteers to solve a mathematical problem, they whoop and holler, cheering him on as he approaches an overhead projector at the front of the class.

The women shout instructions. "Change that line again!" one of them barks when Mr. Winkelvoss adjusts some calculations to