From Einstein-mania to Sicilian pizza, see how immigrants changed America’s identity, culture, and tastes.

See how the worst American disasters of the 1900s led to new innovations and mitigations against future calamities.

At the dawn of the 20th century, most Americans think of Alaska as an icy unpopulated wilderness, but one event will change everything: the Klondike Gold Rush of 1896. Through remastered and colorized news footage and home movies, witness Alaska's evolution from a frozen wasteland at the edge of the world to the 49th state to join the Union. From boomtowns to volcanic blasts to Japanese invasions, this is the story of America's last frontier as you have never seen it before.

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