More than 30 military students were injured in a mass pillow fight leading to a ban of the event in future years.
Former President Jimmy Carter had a lesion removed from his liver.
Pittsburgh hosted the world's largest pinball tournament.
NASA announced they had found 'Earth's bigger, older cousin.'
NASA's New Horizons space probe completed the first flyby of Pluto in the history of human spaceflight.
Comic-Con celebrated its 48th yearly event in San Diego.
Same-sex marriage became legal in all 50 states.
NASA's Mars Odyssey completed its 60,000th orbit around Mars.
Donald Trump announced he was running for President.
A Texan doctor performed the world's first successful partial skull and scalp transplant.
The US Air Force Space Command launched the Boeing X-37B spaceplane for a classified mission.
Hillary Clinton announced her candidacy for US President.
NASA's Dawn probe became the first spacecraft to orbit a dwarf planet.
A drone crashed onto the White House lawn.
A civil rights protest march in Washington, D.C., took place.
The CIA Torture Report was released.
NASA successfully launched Exploration Flight Test 1 to test the Orion crew module.
The One World Trade Center opened on the original World Trade Center site.
UN Women Goodwill Ambassador Emma Watson received a standing ovation for her gender inequality speech at the United Nations Headquarters, New York, US.
The first photos to reveal that the Aral Sea was shrinking were taken by NASA.
Protesting and riots began in Missouri following the death of African American man, Michael Brown.
The Supreme Court of the United States decided on the rule that police cannot examine the contents of a cell phone without a search warrant.
US President Barack Obama met with the Dalai Lama amid warnings from China.
NASA revealed water vapor had been discovered on dwarf planet Ceres.
NASA's MAVEN space probe was launched from the Cape Canaveral Air Force Station.
Same-sex marriage was legalized in Hawaii.
A male cheerleader shot and killed four people, and injured four more at two locations in Dallas, Texas.
Former US Army Private Chelsea Manning was convicted on 17 espionage charges.
Government of Detroit declares bankruptcy.
Asiana Airlines Flight 214 crash lands in San Francisco International Airport.
Edward Snowden was charged with spying and stealing 'government property.'
Edward Snowden publicly declared that he was the source of the leaked NSA documents.
The trial against whistleblower Bradley Manning begins.
The widest tornado ever recorded hits El Reno, Oklahoma.
Water-bearing minerals were discovered on Mars by NASA's Curiosity Rover.
A category 3 blizzard wreaked havoc in the US and Canada.
Vladimir Putin signed a law banning the US adoption of Russian children.
NASA completed a successful mission to map the Moon's gravity field.
Adam Lanza shot and killed 20 children and 6 adults at the Sandy Hook Elementary School in Newtown, Connecticut.
A 100-vehicle pile-up on a highway in Texas killed two people and injured 120 more.
Superstorm Sandy hits the US's eastern coast.
Attacks on The US Diplomatic Compounds in Benghazi, Libya.
Former President Barack Obama gave his nominee acceptance speech.
NASA's Voyager 1 spacecraft entered interstellar space, becoming the first artificial object to do so.
Flammable vapor caught fire at the Chevron Refinery in Richmond, California.
NASA's Curiosity rover landed on Mars' Aeolis Palus plain.
Aurora shooting leaves 12 dead, 70 wounded.
President Barack Obama officially declared his support of same-sex marriage.
George Clooney and Martin Luther King III were arrested at the Sudanese Embassy in Washington, DC.
NASA successfully put two satellites designed to study the Moon's interior structure into the Moon's orbit.
