The clock is relentlessly ticking Our world teeters on a knife-edge between a peaceful and prosperous future for all, and a dark winter of death and destruction

Frederick Douglass recounts early years of abuse, his dramatic escape to the North and eventual freedom, abolitionist campaigns, and his crusade for full civil

The Sourcebook for Teaching Science is a unique, comprehensive resource designed to give middle and high school science teachers a wealth of information that wi