Pratibha Patil was sworn in as India's first female president.
The first large-scale exhibition of Frida Kahlo's works was displayed in Mexico.
Michael Bay's Transformers premiered in Sydney, Australia.
Three-year-old English girl Madeleine McCann went missing while on vacation with her parents, family, and friends in Praia da Luz, Portugal.
The world's first national internet election is held.
Turkish journalist Hrant Dink is assassinated.
The Doomsday Clock's minute hand was moved two minutes closer to midnight, making the new Doomsday just five minutes to midnight.
Harry Potter author J.K. Rowling officially finished writing The Deathly Hallows.
Romania and Bulgaria joined the European Union.
Saddam Hussein executed.
The Madrid Barajas International Airport was bombed.
Audrey Hepburn's dress was auctioned off at a record price.
Al Jazeera English was launched.
Saddam Hussein was sentenced to death after being found guilty of crimes against humanity.
The US population reached 300 million people.
A Military coup overthrows the elected government in Thailand.
Naturalists Chris Atkins and Michael Taylor discovered the world's tallest tree in Redwood National Park, California.
A series of seven bomb blasts killed 209 people in Mumbai, India.
Nathula Pass, a trading post between India and China opens for business.
Pirates of the Caribbean: Dead Man's Chest premiered at Disneyland Resort, Anaheim, California.
Serbia declared its independence from the State Union of Serbia and Montenegro.
The 2006 Yogyakarta earthquake occurred.
The Three Gorges Dam is officially opened.
Mafia boss Bernardo Provenzano is arrested.
President Mahmoud Ahmadinejad announces that Iran has enriched uranium.
Michelle Bachelet became the first female president of Chile.
The UK's biggest robbery happened, where at least six thieves stole £53 million.
Eco Morales becomes Bolivia's first indigenous president.
Evo Morales was inaugurated as Bolivia's first indigenous President.
A 6.7 magnitude earthquake shook the entire Eastern Mediterranean.
Elton John and his partner David Furnish registered their civil partnership at Windsor Town Hall on the first day civil partnerships could legally be performed in England.
UK's Civil Partnership Act of 2004 comes into force.
The first partial facial transplant was given to Isabelle Dinoire in France after a dog attacked her.
Ellen Johnson Sirleaf elected as President of Liberia.
Angela Merkel became the first female Chancellor of Germany.
The fourth movie of J.K. Rowling's novel series, 'Harry Potter and the Goblet of Fire,' premiered in Leicester Square, London, UK.
Three bombs exploded in the Indian city of Delhi, killing 62 people and injuring at least 210 others.
Riots broke out in Paris, France, after two Muslim teenagers were electrocuted trying to evade police.
Iraqi President Saddam Hussein was tried for his crimes against humanity.
The Danish newspaper Jyllands-Posten published a controversial cartoon of the Prophet Muhammad.
Russia and China began their first-ever joint military exercise.
A mega blackout happened on Java and Bali islands in Indonesia, affecting around 100 million people.
Mahmoud Ahmadinejad takes office in Iran.
Army Officers Seize Power in Mauritania.
The Provisional Irish Republican Army (IRA) called for an end to 36 years of bloody conflict with the UK.
NASA decided to suspend space shuttle flights after analyzing the launch of mission STS-114.
The London bombings took place.
Spain legalized same-sex marriage.
A brand new design for Freedom Tower in Manhattan, New York, was publicly revealed.
Reddit was founded in Medford, Massachusetts.