A Tucson teacher is under investigation after sending sixth-grade students home with an assignment that included lyrics from a rap song depicting drugs, sex, gambling and violence. The Tucson Unified ...

On St. Patrick's Day in 1958, the U.S. Navy launched Vanguard 1, the first solar-powered satellite and the oldest artificial satellite currently orbiting Earth. When you purchase through links on our ...

Mathematica needs you! Add, subtract, divide and multiply your way to victory. Meet the Karate Cats and practice spelling, grammar and punctuation as you chop, kick and smash the challenges. Join ...