Chalk it up to mathermatics. What is now seen as a taken-for-granted classroom staple was once the object of intense controversy.

EDUCATION
Want to avoid being saddled with huge student loan debt?
What’s the secret to a long and healthy life? All centenarians have their own habits and morning routines they swear by. From whiskey shots to daily naps to ice cream, here's what some very old people credit for their lengthy lifespan.
How the humble skateboard helped to kickstart a young feminist movement.
The Library of Congress has a collection of books that would make any bookworm turn green with envy. One of their most interesting collections is their rare children's book library.
When Sesame Street debuted in 1969, many producers, teachers, and government officials from different countries contacted the Children’s Television Workshop about airing versions of Sesame Street within their own countries.
From beer to bowling, here are some of the more interesting subjects you can major in at dozens of colleges across America.