Facts about the American flag from its original design to its journey to the moon.

Henry explores the colorful history of the former independent republic known as Texas.

Henry examines the Civil Rights movement in the United States.

Henry reveals surprising facts about inventors Thomas Edison and Nikola Tesla.

Unknown facts about the American Revolution; stories of overlooked heroes; astonishing innovations.

Unknown facts about iconic the Hoover Dam; harrowing tales of the men who built it.

Marijuana's plant roots run deep in America and Henry digs up its long and complicated history.

Henry goes down the strange and sordid trail of currency in America; how bills were first printed.

A look at the diverse background of Las Vegas, from the Depression, to a President's influence.

Henry looks for the truth about untold greed; secret societies still in existence today.