Manolo (voiced by Diego Luna, left) meets Carmen Sanchez (voiced by Ana de la Reguera) in the Land of the Remembered. 20th Century Fox & Reel FX hide caption

itoggle caption 20th Century Fox & Reel FX

Native American protesters have been demonstrating against Columbus Day in Seattle for several years. Protest organizers say Columbus should not be credited with discovering the Western Hemisphere at a time when it was already inhabited. Elaine Thompson/AP hide caption

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The history of how the birth control pill was developed in the 1950s is recounted in Jonathan Eig's new book The Birth of the Pill. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Sherman is still experimenting with the type of food he'll serve in the restaurant. Recently he made this walleye filet with sumac and maple sugar, a white bean and smoked walleye croquette and toasted hominy. Becca Dilley/Courtesy of Heavytable.com hide caption

itoggle caption Becca Dilley/Courtesy of Heavytable.com

Mario Savio, leader of the Berkeley Free Speech Movement, is restrained by police as he walks to the platform at the University of California's Greek Theater in Berkeley on Dec. 7, 1964. Robert W. Klein/AP hide caption

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Archaeologists inspect a female figurine inside a recently discovered, fourth-century B.C. tomb, in the town of Amphipolis, northern Greece on Sept. 7. The occupant of the tomb is unknown, but there's speculation that it could be someone who was closely linked to Alexander the Great. Greek Culture Ministry/AP hide caption

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Home-schooling might still be seen as a fringe movement, but today, it's equally outlandish to suggest that home-schooling should be illegal. A few decades ago, that wasn't the case. MoMo Productions/Getty Images/Ozy hide caption

itoggle caption MoMo Productions/Getty Images/Ozy

President Johnson and Mexican President Gustavo Di­az Ordaz, with their wives, celebrate the dedication of the Chamizal Monument in Juarez, Mexico, on Oct. 28, 1967. The monument signified the international boundary marker between the two countries, designated in 1964. Yoichi Okam/Courtesy of the LBJ Presidential Library hide caption

itoggle caption Yoichi Okam/Courtesy of the LBJ Presidential Library

The good old days: A flight attendant serves coffee and sandwiches to a passenger on board an American Airlines flight, circa 1935. Frederic Lewis/Archive Photos/Getty Images hide caption

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Sweet or salty? Historically among Eastern European Jews, how they liked their gefilte fish depended on where they lived. This divide created a strictly Jewish geography known as "the gefilte fish line." Claire Eggers/NPR hide caption

itoggle caption Claire Eggers/NPR