The geological history of Yellowstone National Park dates back to the formation of the North American continent.

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the origins of the Hawaiian islands have remained a geological puzzle for generations, but recent investigations uncovered that volcanoes hold the key to much of the formation of these beautiful islands.

America's first national park, and easily the most recognizable national park in the world, Yellowstone was made possible by President Theodore Roosevelt, a well-known conservationist.

Did you know that the Statue of Liberty's torch once resided in Madison Square Park? Host Brian Unger reveals the hidden history of Madison Square Park.

The first Social Security check was mailed, Civil War General Ulysses S. Grant was born, the Universe was supposedly created, and Vladimir Putin visits Israel during the Middle East crisis in This Day in History video. The date is April 27th. Ida May Fuller received the first Social Security check for no other reason than her name was first on the list.

In 1947, Barbara Washburn, an explorer and cartographer, became the first woman to scale the summit of Mount McKinley, the tallest mountain in North America. Washburn comments on the vast emptiness of the Alaskan range.