From their highest achievements to their historical insignificance, this episode journeys through the most and least influential Presidents of the United States.

The International Space Station is launched in the 21st Century, marking a major turning point in international cooperation in space exploration. However, with the looming retirement of the space shuttle and a suitable replacement project mothballed, modern NASA is faced with major challenges. But successful Mars rovers fuel dreams of another moonshot project, this time to the Red Planet.

Bigfoot are thought to be shy, nomadic creatures that live in small family groups across North America. But are there really mysterious, seldom seen humanoids in our forests?

Beginning with the founding of the NAACP, this episode examines the societal changes that helped accelerate African American advancement in the early 20th Century.

Arguably the most famous dinosaur, the t-rex was a ferocious terror. Learn about the t-rex and other carnivorous dinosaurs.

The Road to Civil War, battles over Slavery turn violent in Kansas and Harper's Ferry. The election of Lincoln, Secession, Fort Sumter and the First Battle of Manassas.

During Reagan's first term he appointment Sandra Day O'Conner to the Supreme Court, the first woman to hold the position. He also instated his supply-side economic theories sometimes called "The Trickle Down Theory".

An exploration of the air battles that marked World War I as the first aerial war.

The origins of Soviet-American tensions in the divided city of Berlin from the final days of World War II up through the time of John F. Kennedy‘s Presidency.

Las Vegas hit the jackpot post-WWII through 1960.