Ronald Reagan signs a bill to create Martin Luther King, Jr. Day. The day, observed every year on the third Monday of January, commemorates the life of Martin Luther King, Jr. a leader of the African-American Civil Rights Movement.
Mary Leakey and her team discover 1st fossils of Homo habilis, an early human ancestor, at Olduvai Gorge, Tanzania. Homo habilis one of the earliest species to make stone tools, lived between 1.4 and 2.3 million years ago.
Balfour Declaration. Originally sent as a letter on this day to Baron Rothschild from British Foreign Secretary Arthur James Balfour, it declared BRitish support for a Jewish state in Palestine. The letter was eventually added to Sevres peace treaty.