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From the bestselling author of Oh, Yuck! and Oh, Yikes!, with over 1.25 million copies in print, here is an A-Z compendium of hands-on grossness. F...

Ben Franklin was the scientist who, with the help of a kite, discovered that lightning is electricity. He was also a statesman, an inventor, a prin...

Although polio left him wheelchair bound, Franklin Delano Roosevelt took office during the Great Depression and served as president during World Wa...

As a child he dreamt of changing South Africa; as a man he changed the world.  Nelson Mandela spent his life battling apartheid and championing a p...