Endeavour in LA

The space shuttle Endeavour is on 12-mile journey from Los Angeles International Airport to the California Science Center to go on permanent public display. (Photo by Kevork Djansezian/Getty Images)

Romney nomination

Republican presidential candidate, former Gov. Mitt Romney watches as his wife, Ann Romney and former U.S. Secretary of State Condoleezza Rice stand and applaud during the Republican National Convention. (Photo by Chip Somodevilla/Getty Images)

Drought in the midwest

Sandy skyline

Much of the New York City skyline sits in darkness after Hurricane Sandy, on October 30 in Weehawkin, New Jersey. (Photo by Andrew Burton/Getty Images)

Obama accepts nomin

U.S. President Barack Obama speaks on stage as he accepts the nomination for president during the final day of the Democratic National Convention on September 6, 2012 in Charlotte, North Carolina. (Photo by Streeter Lecka/Getty Images)

Spain human tower

Members of the Colla 'Caprogossos de Mataro' climb up as they construct a human tower during the 24th Tarragona Castells Comptetion on October 7, 2012 in Tarragona, Spain. (Photo by David Ramos/Getty Images)

Republican debates

Republican presidential candidates (L-R) former U.S. Sen. Rick Santorum, former Speaker of the House Newt Gingrich (R-GA), former Gov. Mitt Romney and U.S. Rep. Ron Paul (R-TX) at the start of a debate. (Photo by Chip Somodevilla/Getty Images)

Final presidential debate

U.S. President Barack Obama and first lady Michelle Obama stand on stage with Republican presidential candidate Mitt Romney and wife, Ann Romney after the debate in Boca Raton, Florida. (Photo by Joe Raedle/Getty Images)

Olympic opening ceremony

David Beckham passes under Tower Bridge driving a speedboat named 'Max Power' which carries the Olympic Torch carried by torchbearer Jade Bailey on July 27, 2012 in London, England. (Photo by Matthew Lloyd/Getty Images)

Hurricane Isaac

A woman walks through flood waters from Hurricane Isaac’s storm surge on the north shore of Lake Pontchartrain on August 30, 2012 in Mandeville, Louisiana. (Photo by Mario Tama/Getty Images)

Sandy voting

3-year-old Fiana waits for her parents to vote in the presidential elections in a tent in Midland Beach November 6, 2012 in the Staten Island borough of New York City. (Photo by Allison Joyce/Getty Images)

Obama wins

President Barack Obama walks on stage with first lady Michelle Obama and daughters Sasha and Malia to deliver his victory speech on election night at McCormick Place November 6, 2012 in Chicago. (Photo by Win McNamee/Getty Images)

Chicago Teacher's Strike

Chicago public school teachers and their supporters picket in front of the Chicago Public Schools (CPS) headquarters on September 11, 2012 in Chicago, Illinois. (Photo by Scott Olson/Getty Images)

Soldier returns

Soldiers from the 713th Engineer Company of the Indiana Army National Guard are greeted by family and friends at a homecoming ceremony at the Army Aviation Support Facility on September 26, 2012 in Gary, Indiana. (Photo by Scott Olson/Getty Images)

Sandusky sentenced

Former Penn State assistant football coach Jerry Sandusky walks into the Centre County Courthouse before being sentenced in his child sex abuse case on October 9, 2012 in Bellefonte, Pennsylvania. (Photo by Patrick Smith/Getty Images)

2012 Sept 11 anniversary

The ‘Tribute in Light’ shines as One World Trade Center rises under construction on the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center on September 11 in New York City. (Photo by Mario Tama/Getty Images)

Illinois Tornado

Residents look over the remains of St. Joseph's Catholic Church on March 1, 2012 in Ridgeway, Illinois. The 110-year-old church was completely destroyed after it was struck by a tornado. (Photo by Scott Olson/Getty Images)

Egyptian election

A supporter of the Muslim Brotherhood overcome by emotion is carried onto the stage as Egyptians celebrate the election of their new president Mohamed Morsi in Tahrir Square on June 24 in Cairo. (Photo by Daniel Berehulak/Getty Images)

Colorado wildfires

Destroyed homes sit beside a home left untouched by fire in a neighborhood affected by the Waldo Canyon fire on June 30, 2012 in Colorado Springs, Colorado. (Photo by Spencer Platt/Getty Images)

Trayvon Martin death

Supporters gather during a candelight vigil at a memorial to Trayvon Martin where Trayvon was shot and killed by George Michael Zimmerman while on neighborhood watch patrol in Sanford, Florida. (Photo by Mario Tama/Getty Images)

Romney concedes

Republican presidential candidate, Mitt Romney, speaks at the podium as he concedes the presidency during his campaign election night event at the Boston Convention & Exhibition Center on November 7.(Photo by Justin Sullivan/Getty Images)

Indiana Tornado

Amando Gomez salvages what he can from his families home that was destroyed by a tornado on March 4 in Marysville, Indiana. (Photo by Joe Raedle/Getty Images)

Naval Academy Freshme

Annapolis Naval Academy freshmen make a human wall to climb the Herndon Monument which is covered with lard, on May 22, 2012 in Annapolis, Maryland. (Photo by Mark Wilson/Getty Images)

Paterno statue moved

An area of the statue of former Penn State University football coach Joe Paterno stood sits empty after it was removed by workers outside Beaver Stadium on July 22 in State College, Penn. (Photo by Patrick Smith/Getty Images)

Aurora shooter

Accused movie theater shooter James Holmes makes his first court appearance at the Arapahoe County on July 23, 2012 in Centennial, Colorado. (Photo by RJ Sangosti-Pool/Getty Images)

Clint Eastwood and empty chair

Actor Clint Eastwood speaks during the final day of the Republican National Convention at the Tampa Bay Times Forum on August 30, 2012 in Tampa, Florida.  (Photo by Mark Wilson/Getty Images)

Occupy Wall Street

A protester associated with the Occupy Wall Street movement is arrested while marching through traffic in lower Manhattan on May 1 in New York City. (Photo by Spencer Platt/Getty Images)

Roller coaster destroyed by Superstorm Sandy

A roller coaster sits in the Atlantic Ocean after the Fun Town pier it sat on was destroyed by Superstorm Sandy on November 1, 2012 in Seaside Heights, New Jersey. (Photo by Mark Wilson/Getty Images)

Greece economic crisis

A homeless man sleeps rough beneath a graffiti-covered wall in a train station on February 16, 2012 in Athens, Greece. (Photo by Oli Scarff/Getty Images)

State of the Union

President Barack Obama embraces U.S. Rep. Gabrielle Giffords (D-AZ) as members of Congress applaud before his State of the Union address before a joint session of Congress on Capitol Hill January 24 (Photo by Saul Loeb-Pool/Getty Images)

Newtown, Conn.

A woman holds a child as people line up to enter the Newtown Methodist Church near the the scene of an elementary school shooting on December 14, 2012 in Newtown, Connecticut. (Photo by Douglas Healey/Getty Images)