Because it's too dangerous to retrieve the dead bodies that litter the slopes of Mount Everest, most climbers remain right where they fell while trying to summit Earth's tallest peak.PRAKASH MATHEMA / Stringer / Getty ImagesThere are some 200 dead bodies on Mount Everest, serving as grim warnings for other climbers to this day. Mount Everest holds the impressive title of tallest mountain in the world, but many people don’t know about its other, more gruesome title: the world’s largest open-air graveyard.

The Great Depression hit few cities harder than New York — but the city's darkest hour was also the crucible in which today's New York was forged. With the stock market crash of 1929, the Great Depression, at least nominally, began in New York City. The economic cataclysm would hit the nation's largest city particularly hard.An unemployed man reads a newspaper in his shanty, 1933. FPG/Hulton Archive/Getty Images An unemployed man lies down on the city docks, circa 1935.

Last year, Sally "Redoshi" Smith was identified as the last survivor of the transatlantic slave trade. New research reveals Matilda McCrear lived three years longer — and led an extraordinary life.Public DomainMatilda McCrear married a German man and had 14 children after her enslavement in the U.S. Only a year ago, Newcastle University’s Hannah Durkin identified the last known survivor of the transatlantic slave trade as former slave Sally “Redoshi” Smith.

A former bandit, Francisco "Pancho" Villa became one of the most renowned generals in the Mexican Revolution — and fought tirelessly for the poor.Library of CongressToday, Pancho Villa is sometimes remembered as a folk hero, with some comparing him to Robin Hood. In 1910, the Mexican Revolution saw numerous revolutionaries rise up to overthrow dictator Porfirio Díaz. Though the ousting was successful, the aftermath was chaos. One of the revolution’s leaders, Francisco Madero, took Díaz’s place as the country’s president, but was assassinated in 1913 by ally-turned-adversary Victoriano Huerta.

The art project combines all 21,450 pages of Eiichiro Oda's hugely successful manga series into one single display piece. JBE BooksThe massive art project is appropriately titled, “ONEPIECE.” It’s official, the world’s longest book is here, and it comes in a whopping 21,450-page volume weighing 37.5 pounds. It also happens to be one of the world’s most popular manga. As Artnet reported, the book is a compilation of every digitally released panel of Eiichiro Oda’s 25-year-old epic pirate series, now inconveniently bound in an outrageously large, single-volume edition thanks to the work of the conceptual artist, Ilan Manouach.