Images

Muskrat swimming in the Rideau River, Ottawa, Ontario. Photograph by D. Gordon E. Robertson.

Yankton Sioux activist and writer Zitkála-Šá (l. 1876-1938), photographed by Gertrude Käsebier in 1898. National Museum of American History, Washington D.C.

Yankton Dakota Sioux writer and activist Zitkála-Šá (l. 1876-1938), photo by Joseph Turner Keiley in 1898. National Portrait Gallery, Smithsonian Institution, Washington D.C.

Map depicting the Battle of Guilford Court House (15 March 1781) by Richard Harvey, 2006.

A c. 1940 photograph showing a formation of Luftwaffe Heinkel He 111 bomber planes during the Second World War (1939-45). (German Federal Archives)

A Luftwaffe He 111 bomber flying over Wapping, London during the London Blitz. Photograph taken from another German aircraft on 7 September 1940. (Australian War Memorial)

The Dowding System (named after its architect, Air Chief Marshal Hugh Dowding 1882 - 1970) was Britain's pioneering integrated air defense system during the Second World War. The system incorporated advanced radar technology, robust communication...

Artist's impression of a courtyard during the period of the Umayyad Caliphate. Created by Amplitude Studios for the video game Humankind.

Artist's impression of a castle of the Teutonic Order. Created by Amplitude Studios for the video game Humankind.

Artist's impression of the house of a rich Swahili merchant whose trade along the Swahili Coast brought wealth to the family. Created by Amplitude Studios for the video game Humankind.