On Wednesday, December 27, 2017, ceremonies marking the 99th anniversary of the outbreak of the victorious Greater Poland Uprising take place in Poznan and throughout Greater Poland. Photo punctually at 4:40 pm. [1280×783]

On Wednesday, December 27, 2017, ceremonies marking the 99th anniversary of the outbreak of the victorious Greater Poland Uprising take place in Poznan and throughout Greater Poland. Photo punctually at 4:40 pm. [1280×783]

A woman crossing a canal contaminated with lead and other mining byproducts, in the neighborhood of Chowa in Kabwe, Zambia [1920×1440] Photo by Larry C. Price

A woman crossing a canal contaminated with lead and other mining byproducts, in the neighborhood of Chowa in Kabwe, Zambia [1920×1440] Photo by Larry C. Price

Strike photo from USS Yorktown aircraft showing burning oil storage tanks on the banks of the Mekong River in Saigon, French Indochina, 12 Jan 1945. [2080 x 1312]

Strike photo from USS Yorktown aircraft showing burning oil storage tanks on the banks of the Mekong River in Saigon, French Indochina, 12 Jan 1945. [2080 x 1312]

Namibia, on Africa’s southwest coast, is a large country with a harsh landscape. The towering and constantly shifting dunes of the Namib Desert, shown here in this aerial photo by Julian Walter, run right to the Atlantic Ocean and can reach up to a thousand feet high. [2048 x 1536]

Namibia, on Africa’s southwest coast, is a large country with a harsh landscape. The towering and constantly shifting dunes of the Namib Desert, shown here in this aerial photo by Julian Walter, run right to the Atlantic Ocean and can reach up to a thousand feet high. [2048 x 1536]