February 11th

Pope Benedict XVI announces his resignation from February 28, the first pope to resign since 1415.
Resignation of Pope Benedict XVI
Singer Whitney Houston was found dead in a hotel room in Beverly Hills, Calif., at age 48. (Her death was later ruled an accidental drowning, with heart disease and cocaine use as contributing factors.).
Whitney Houston
As a result of the Arab Spring protests, Egyptian president Hosni Mubarak announces his resignation and hands power of the country over to the military.
Egyptian revolution of 2011
Democrat John Dingell of Michigan became the longest-serving member of the U.S. House of Representatives with more than 53 years of service.
John Dingell
The Defense Department charged Khalid Sheikh Mohammed with murder and war crimes in connection with the Sept. 11 attacks.
Khalid Sheikh Mohammed
Nelson Mandela is freed after 27 years as a political prisoner. The anti-apartheid campaigner's release was a high point in South Africa's transition from apartheid to democracy.
Nelson Mandela
The Episcopal Church Boston diocese consecrated Barbara Harris as the church's first woman bishop.
Episcopal Diocese of Massachusetts
Ayatollah Khomeini seizes power in Iran. Few days after Khomeini's triumphant return from French exile, the Iranian army steps aside, making way for the creation of an Islamic theocracy.
Iranian Revolution
Margaret Thatcher becomes the first female leader of the British Conservative Party. Thatcher won the general elections in 1979 and became Prime Minister of the United Kingdom.
Margaret Thatcher
Japan became the fourth country to put a satellite into orbit.
Ōsumi (satellite)
American author and poet Sylvia Plath was found dead in London, a suicide. she was 30.
Sylvia Plath
President Franklin D. Roosevelt, British Prime Minister Winston Churchill and Soviet leader Josef Stalin wrapped up a conference at Yalta in the Crimea by signing a series of agreements on the governance of post-World War II Europe.
Joseph Stalin
The BBC broadcasts Karel Čapek's “R.U.R.”, the world's first science fiction TV program. The Czech play whose abbreviated title stands for “Rossum's Universal Robots” introduced the word “robot” to the English language.
A sit-down strike against General Motors ended with the company agreeing to recognize the United Automobile Workers Union.
Flint sit-down strike
Lateran Treaty was signed, with Italy recognizing the independence and sovereignty of Vatican City.
Lateran Treaty
Bernadette Soubirous sees a vision of the Virgin Mary near Lourdes. The small town in southern France became one of the most important Christian places of pilgrimage.
Our Lady of Lourdes
Inventor Thomas Alva Edison was born in Milan, Ohio.
Thomas Edison
Robert Fulton patented the steamboat.
1809 in science
Lewis and Clark's Shoshone guide Sacajawea gave birth to a son, Jean Baptiste.
Henry VIII recognised as supreme head of Church in England following the schism with Rome.
History of the Church of England