Obama on 'The View': Campaign Is 'Tight'

Tornado Chasers Catch Outbreak on Tape

ABC News' Ginger Zee chases tornadoes during a large breakout of storms.

Aimee Copeland Gets Bionic Hands

Touch Bionics donated prosthetics to Georgia woman, 25, who lost her hands to flesh-eating bacteria.

Tornado Twists Through Okla.

Twister ripped apart homes from Newcastle to Moore, a path of 12 miles.

Cops Kill Hofstra Student in Home Invasion Standoff

A police officer made a split-second decision when a man held Andrea Rebello hostage.

Wait Begins for Owner of Winning Powerball Ticket

One ticket worth a half-billion dollars was purchased in small Florida town of Zephyrhills.

$590 Million Powerball Ticket Sold in Florida

The search is on for the lucky person who purchased the winning ticket.

Aimee Copeland's Comeback After Flesh-Eating Bacteria

Woman who lost her limbs talks about her positive outlook on life.

Monster Twisters Caught on Tape

At least four tornadoes touch down in Kansas; heavy rain and winds on its way.

Tornadoes Rip Through Homes in Oklahoma

Powerful tornadoes swept across the Midwest leaving a path of destruction and debris.

May 1999: Historic Okla. Tornado

EF-5 tornado killed 42 people in the Oklahoma City area.

Rhode Island Student Disappears on Drive Home

Matthew Royer, 21, never arrived at his Pennsylvania home after leaving the University of Rhode Island.

Yale Graduate's Essay Resonates After Death

Recent grad and promising writer Marina Keegan, 22, died in a car crash.

Jodi Arias Judge Denies Attorneys' Request to Withdraw

Kirk Nurmi asked for a mistrial in the death penalty phase citing prosecutorial misconduct.

Alexander's Siblings Emotional Plea to Arias Jury

Family of Arias' Victim and a former boyfriend addressed the jury who must decide her sentence.