An encyclopedia designed especially to meet the needs of elementary, junior high, and senior high school students.

World War II coincided with cinema's golden age. Movies now considered classics were created at a time when all sides in the war were coming to realize the grea

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the publi

A free, world-class education for anyone, anywhere: this is the goal of the Khan Academy, a passion project that grew from an ex-engineer and hedge funder's onl