September 3 is a gruesome anniversary but also one we must not forget: on this day in 1941, Nazis first used Zyklon B to kill prisoners at the Auschwitz concentration camp
Daily Quiz: On Zyklon B
September 3 is a gruesome anniversary but also one we must not forget: on this day in 1941, Nazis first used Zyklon B to kill prisoners at the Auschwitz concentration camp
