To prepare for an 90-mile, 8-week research trip across Alaska, apprentices in Juneau's Icefield Research Program must first learn how to survive in the wild.
In 1828, John Jacob Astor built a trading post on the Missouri River. Business was so profitable that it only took four decades for Astor to become America's first multimillionaire.
As a precocious 3-year-old in small-town Mississippi, Oprah Winfrey learned how to entertain an audience when she was encouraged to recite bible passages to her church.
Surrounded by four of America's Great Lakes, Michigan has more freshwater shoreline than any other state. Each of its shores has its own unique landscape, from forests, to beaches, to giant walls of sand.
In 1942, one thousand families were pushed out of Oak Ridge, Tennessee as part of The Manhattan Project - the US government's top secret initiative to engineer an atomic bomb.