Boston Bombing Victim Vows to Dance Again

Dancer Adrianna Haslet lost her left foot when the bombs went off at the Boston Marathon.

Boston Marathon Bomb Suspect Captured

Boston was on lockdown as authorities pursued a massive manhunt for Dzhokhar Tsarnaev.

Boston Marathon Bombers: Criminal Minds

How two boys next door, who had lived in America for years, turned into alleged killers.

Dzhokhar Tsarnaev: American College Student

The Boston Marathon bomb suspect's shocked friends and classmates speak out.

FBI Releases Photos of Boston Marathon Suspects

Authorities are looking for two men still considered to armed and dangerous.

Texas Fertilizer Plant Explosion Rescuers Search for Survivors

Search and rescue teams in West, Texas, are looking for the missing among the rubble.

Teen: I Am Not the Marathon Bomber

Salah Barhoun said he went to police to clear his name after pictures showed up online.

West Texas Plant Explosion Injures More Than 100, Levels Homes

Victims said an explosion at a Texas fertilizer plant sounded like a "massive" bomb.

West Texas Plant Explosion: The Casualties

Dr. Glenn Robinson of Hillcrest Hospital gives an update on the injured in the explosion near Waco.

Boston Marathon Bombing: The Manhunt

Authorities say they have a clear picture of a potential suspect in the bombings

Boston Marathon Bombing: Investigation Breakthrough

Federal investigators say they have recovered mangled remains of one of the bombs.

Honoring Boston Marathon Victims

'Nightline's' Terry Moran reports on the three people killed in the bomb explosions.