Events relating to athens
South African surgeon Christiaan Barnard, in Cape Town, transplants the heart of a young woman into a 55-year-old grocer, Louis Washkansky
US soldiers massacre hundreds of unarmed civilians in the Vietnamese village of My Lai
AIM (American Indian Movement) is founded to improve the status of native Americans, or American Indians

English biographer Michael Holroyd completes his two-volume life of Lytton Strachey
Pope Paul VI issues the encyclical Humanae Vitae, condemning all methods of artificial birth control
Catholic bishops in Latin America, plagued by oppressive regimes, develop the concept of liberation theology
Gore Vidal publishes Myra Breckenridge, featuring a lively transsexual as the central character

Three US astronauts become the first humans to leave the earth's orbit, reaching the moon and going into its orbit in Apollo 8
The US astronauts in Apollo 8 are the first humans to see (and photograph) the sight of the earth rising above the moon's horizon
The Beatles study Transcendental Meditation at the ashram in India of Maharishi Mahesh Yogi, prompting an increased interest in Hinduism in the West
The Anglo-French airliner Concorde makes its first supersonic test flight
Hip-hop originates as a dance style in New York among young African Americans
Ian Paisley and others in northern Ireland form the Democratic Unionist Party, as the intransigent wing of Ulster Unionism
The Orleans House Gallery is opened to the public, mounting a regular series of temporary exhibitions
Activists of the American Indian Movement survive a ten-week siege at Wounded Knee, winning international attention
Donald Johanson and Tom Gray find an almost complete Australopithecus female skeleton at Hadar in Ethiopia, and nickname her Lucy after the Beatles song Lucy in the Sky with Diamonds
The king of Morocco sends 350,000 settlers across the border into Western Sahara
Cuban troops, sent by Castro to Angola, clash with South African forces attempting to combat communism
Black American author Alex Haley traces his family origins in Africa in Roots
A treaty provides for the gradual transfer of the Canal Zone from US to Panamanian control
Italian cardinal Albino Luciani is elected pope and takes the name John Paul I
Pope John Paul I dies, after a pontificate of only 33 days
A Catholic-Orthodox joint commission acknowledges the long-term aim of re-establishing full communion between the two churches
Polish cardinal Karol Wojtyla is elected pope and takes the name John Paul II
The State Constitutional Convention introduces many reforms in the US state of Hawaii, in particular taking steps to redress the wrongs done to native Hawaiians by the overthrow of their kingdom in 1893