Gabby Giffords and Mark Kelly Speak Exclusively to Diane Sawyer

President Assad Defiant in Rare Speech

Syrian President slams Western states in first address to nation in over half a year.

Love Letters Lost and Found: Couple Read Recovered Letters From World War II

Hundreds of letters between husband and wife bring back memories once forgotten.

Obama's Defense Nominee Chuck Hagel Stirs Washington Lawmakers

Both political parties prepare for fight against proposed Secretary of Defense pick Chuck Hagel.

Super Bowl of College Football: Alabama, Notre Dame Vie for National Title

Estimated 30 million viewers expected to tune in to highly anticipated game.

Gun Shows Draw Big Crowds in Spite of Deadly School Shooting

Demand for guns rise as Americans fear of looming gun control reforms.

Gabby Giffords and Mark Kelly Speak Exclusively to Diane Sawyer

Giffords and her former astronaut husband talk on the two-year anniversary of Tucson shooting

Protestors Outraged by Steubenville, Ohio, Authorities' Handling of Rape

Residents rally against suspected cover-up of alleged rape of 16 year-old girl by Steubenville High School athletes.

Behind Diana's Private Photo: Who Was the Secret Man?

ABC News' Nick Schiffrin learns identity of mysterious stranger captured in old picture.

Too Close for Comfort: Nose-to-Nose with Polar Bears

New BBC documentary leaves cameraman in fear while filming Arctic animals.

Movie Studio Fights Back over Matt Damon Environmental Film

New movie "Promised Land" creates controversy in debate over natural gas drilling.

Cotton Bowl Player Turns Loss into Personal Win

Oklahoma Scooners player beats cancer while never missing a game.

Pilot Tests Positive for Alcohol, Arrested Before Take-Off

TSA officials noted smell of alcohol on commercial airline pilot's breath.

Passenger Restrained in Seat With Duct Tape Mid Flight

Drunken traveler tied down by fellow passengers on overseas trip.

Stolen Iphone Leads Virtual Vigilante to Payback

Victim of tech theft sets up meeting with robber over popular dating site.

Widespread Flu Outbreak Rises to 41 States

Center for Disease Control reports increase in flu cases with jump from 31 states in U.S.

Transcript for Gabby Giffords and Mark Kelly Speak Exclusively to Diane Sawyer