A new type of tandem at Alexandra Palace, London. (Photo by Fox Photos/Getty Images). June 1936

Men slicing blubber off a large, dead whale. (Photo by Topical Press Agency/Getty Images). Circa 1912

An Indian Brahmin and his family. (Photo by Hulton Archive/Getty Images). Circa 1890

Culinary Specialist 2nd Class Jaqueline Rodriguez subdues a simulated suspect after being sprayed with oleoresin capsicum (OC) spray during security training aboard the amphibious dock landing ship USS Comstock (LSD 45). (U.S. Navy photo by Mass Communication Specialist 2nd Class Joseph M. Buliavac/Released). May 10, 2011

A train attendant helps a passenger to adjust her seat at the business class carriage on a CRH 380A bullet train Thursday, June 16, 2011. (Photo by Reuters/China Daily)

A view shows a Lun-class Soviet-made ekranoplan, which is a naval craft and a ground-effect vehicle, on the Caspian Sea coastline in Derbent in the Republic of Dagestan, Russia on November 3, 2020. (Photo by Kazbek Basayev/Reuters)

A C-17 Globemaster III crew prepares an air refueling mission September 27, 2012, at Joint Base Charleston, S.C. (Photo by Airman 1st Class Matthew J. Bruch/U.S. Air Force photo)

Schoolchildren ride on a makeshift raft to attend the opening of classes at a remote Casili Elementary School in Montalban, Rizal northeast of Manila, Philippines June 13, 2016. (Photo by Erik De Castro/Reuters)