Life under the Khmer Rouge in the 1970s, the Germans kidnapped by the Contras in Nicaragua in the 80s, plus how Aboriginal women took on the Australian government against nuclear waste, Anita Hill's stand against the promotion of Judge Clarence Thomas to the US Supreme Court and the birth of the Sony Walkman.

(PHOTO: CHOEUNG EK, CAMBODIA - 1993/02/01: Skulls are piled up at a monument situated outside Phnom Penh to serve as a constant reminder of the genocide under the Khmer Rouge during the Pol Pot years.. (Photo by Peter Charlesworth/LightRocket via Getty Images)