Mark Zuckerburg Reveals Organ Transplant Facebook Tool

Friend of Boston Bombing Suspect Shot and Killed by FBI Agent

Ibragim Todashev, friend of Tamerlan Tsarnaev, was linked to triple murder with bombing suspect.

Jodi Arias Feels 'Betrayed' By Jury

The convicted killer sat down with ABC News' Ryan Owens after pleading for her life.

London Knife-Hacking Attack Called Possible Terror

Alleged attacker talks on video after attack, knives in hands.

FBI Shoot Florida Man Connected to Boston Bombing Suspect

Ibragim Todashev was allegedly about to sign confession to 2011 triple homicide when he pulled a knife on agent.

TechBytes: Xbox, 'Call of Duty'

Microsoft unveils the new Xbox One, which is scheduled to go on sale later this year.

Cleveland Kidnap Victim Visits Salon for First Time in Decade

Gina DeJesus, 23, takes another step in her physical and emotional recovery.

FBI Fatally Shoots Florida Man in Boston Bombing Probe

FBI says a "violent confrontation" followed the questioning of Ibragim Todashev.

Profane Cancer Hats Get Sisters Kicked Out of Mall

Philadelphia sisters expressed their hatred of the disease that took their mother's life.

Did Boston Bomb Suspect Leave a Note?

Officials say anti-American writing found in boat hiding place.

Plus-Size Model Battles Back Against Wave of Criticism

H&M's swimwear model Jennie Runk says she's fed up with the negative comments.

London Attack: 'Strong Indications' of Terror, PM Says

Prime Minister David Cameron calls the London attack "sickening."

Tornado Survivors 'Big Dog, and Little Dog' on Reunion

Hug between Hezekiah Darbon and his neighbor was one of the most touching moments after the storm.

Jodi Arias to Donate Hair, Recycle If Allowed to Live

Convicted murderer says she "can't in good conscience" ask jury to sentence her to death.

Oklahoma Tornado Stories of Heroism and Bravery

Hero teacher, a survivor of the Oklahoma tornado, recalls the moments the tornado hit.

Horrific Video From Inside Oklahoma School

Teacher captures the moment the EF-5 tornado hit Moore, Okla., and the devastating aftermath.