Game of Thrones premiered on HBO.
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.
5 Seconds of Summer member Luke Hemmings posted his first YouTube video.
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The 'Don't Ask Don't Tell' policy was repealed.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.
Last episode of "Larry King Live" aired.
SpaceX became the first private company to launch, orbit, and recover a spacecraft.
A first edition of 'The Birds of America' by John James Audubon was auctioned at Sotheby's, London, England, for £7,321,250 ($10 million) – which took the record for any book at auction.
British singer-songwriter Adele released her hit single 'Rolling in the Deep.'
Harry Potter and the Deathly Hallows – Part 1, based on J.K. Rowling's 2007 fantasy novel, was released worldwide.
Sebastian Vettel became the youngest Formula 1 World Champion ever by winning the last race of the season in Abu Dhabi.
Taylor Swift's third studio album 'Speak Now' was released. It won Billboard's 2011 Album of the Year.
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.
Instagram was launched and gained 25,000 users on its first day.
Actor and actress Seth Rogen and Lauren Miller got engaged.
The American biographical drama movie 'The Social Network' was released at the New York Film Festival.
Oil rig Deepwater Horizon is declared sealed after a 5-month long spill in the Gulf of Mexico.
Lady Gaga wore a full outfit made of meat for the MTV Video Music Awards.
The historical drama 'The King's Speech' premiered at Telluride Festival in the United States.
Singapore opened the world's first Summer Youth Olympics Games.
Californian Judge Vaughn Walker overturned the same-sex marriage ban.
Wikileaks published classified information about the war in Afghanistan.
British boyband One Direction was formed during X-Factor UK.
FIFA World Cup Final is held in Johannesburg, South Africa.
'Inception,' starring Leonardo DiCaprio and Joseph Gordon-Levitt, premiered in London, England.
The longest tennis match in history took place.
The Twilight Saga: Eclipse premiered in Los Angeles.
Eminem released his 7th studio album 'Recovery.'
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.
SpaceX's Falcon 9 rocket successfully launched on its maiden flight.
In the Super Rugby Final at Orlando Stadium, the Bulls defended their title with a 25-17 win over the Stormers in an all-South African final.
The final episode of LOST aired.
The worst air crash involving a Boeing 737 kills 158 in India.
Emmy Award winner Julia Louis-Dreyfus, star of 'Seinfeld,' received the 2,407th star on the Hollywood Walk of Fame.
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.
Craig David was appointed as Goodwill Ambassador against tuberculosis (TB) by the World Health Organization.
A massive earthquake strikes Chile.
