Lone wolf extremist goes on a massacre in Norway.
NASA's space shuttle program finally came to a close when mission STS-135 landed.
The British newspaper, News of the World, published its last-ever edition following a phone-hacking scandal.
South Sudan becomes the youngest country in the world.
The Space Shuttle Atlantis launched for its final mission.
NASA's Endeavour Space Shuttle landed for its 25th and final time.
Germany abandons nuclear energy.
NASA launched the Endeavour Space Shuttle on the penultimate space shuttle mission.
The FBI's most wanted man, Osama bin Laden, was killed by the US Navy Seals and CIA operatives in Abbottabad, Pakistan.
Prince William and Kate Middleton tied the knot.
An EF4 multiple-vortex tornado destroyed areas of two major Alabama cities: Tuscaloosa and Birmingham.
The movie 'Thor' premiered in cinemas in Sydney, Australia.
The Australian boy band 5 Seconds of Summer formed.
15,899 lives were lost after a severe 9.0 magnitude earthquake occurred in Japan.
Space Shuttle Discovery completed its last-ever mission and made its final landing onto Kennedy's runway at 11:57 am EST.
185 people are killed during an earthquake in Christchurch, New Zealand.
Green River serial killer pleads guilty to 49th murder.
Myanmar's first elected parliament in half a century convenes.
The Egyptian government shut down 88% of the internet across the country.
The 2011 Egyptian revolution began after years of police brutality and corruption.
Estonia joined the Eurozone and adopted the Euro as its currency.
The 'Don't Ask Don't Tell' policy was repealed.
Street vendor Mohamed Bouazizi self‑immolates in Tunisia, igniting the Arab Spring.
SpaceX became the first private company to launch, orbit, and recover a spacecraft.
Sebastian Vettel became the youngest Formula 1 World Champion ever by winning the last race of the season in Abu Dhabi.
All 33 miners trapped after a mining accident in Chile were rescued after being stuck underground for 69 days.
The country of Netherlands Antilles is dissolved.
Oil rig Deepwater Horizon is declared sealed after a 5-month long spill in the Gulf of Mexico.
The historical drama 'The King's Speech' premiered at Telluride Festival in the United States.
Californian Judge Vaughn Walker overturned the same-sex marriage ban.
Wikileaks published classified information about the war in Afghanistan.
FIFA World Cup Final is held in Johannesburg, South Africa.
The world's first country-wide (Bhutan) total tobacco ban goes into effect.
South Africa played host to the first FIFA World Cup in Africa.
The worst air crash involving a Boeing 737 kills 158 in India.
The Deepwater Horizon oil rig explodes.
The President of Poland, Lech Kaczynski, dies in a plane crash.
Chechen women detonate two bombs in the Moscow underground.
A massive earthquake strikes Chile.
Sachin Tendulkar becomes the first cricket player to score a double-century in the One Day International format.
WikiLeaks published the first US diplomatic cable leak provided by Chelsea Manning.
A 7.0 magnitude earthquake in Haiti claimed 316,000 lives.
Giant self-rolling snowballs were found in the UK.
The world's largest building at the time opened in Dubai.
US President Barack Obama received a vaccine jab against the swine flu.
Major Malik Hasan opened fire at the Soldier Readiness Processing Center in Fort Hood, Texas and killed 13 people, injuring 30.
General Abdel Aziz sworn in as President of Mauritania.
Greenland assumes self-rule.
NASA launched the Lunar Reconnaissance Orbiter, the first American lunar mission in ten years.
Two American journalists were sentenced to 12 years of penal labor after illegally entering North Korea.
