Twitter Revolution: Iranian Protests Go Online

'This Week' Exclusive: Iran's Foreign Minister Zarif

George Stephanopoulos goes one-on-one with Iranian Foreign Minister Dr. Javad Zarif.

Bill Clinton: Proposed GOP Budget Cuts 'Chilling,' 'Spiteful'

The former president speaks to George Stephanopoulos on the debt ceiling battle.

Couples Have Sex for an Audience in English TV Show

Executives behind 'Sex Box' say they are trying to provoke and adult conversation about sex.

Feed Frenzy: Aaron Hernandez Charged with Murder

Former Patriots tight end was indicted in the shooting death of his friend, Odin Lloyd.

Global Warming Debate Heats Up at UN

Scientists reveal visual proof humans most likely to blame for climate change.

Teen's Memory Kept Alive With Acts of Kindness

Alyssa O'Neill's parents bought Pumpkin Spice Lattes for 40 strangers and the tribute went viral.

Obama's Tough Stance Against Government Shutdown

The president holds news conference to pressure republicans into raising debt ceiling.

'This Week': Bill Clinton on Hillary 2016

Bill Clinton discusses Hillary Clinton's potential presidential run.

Navy Siblings Reunited After 30 Years Apart

Brother and sister find each other after being separated at a young age.

Former Porn Star Makes Tearful Plea for Condom Use

Cameron Bay and other HIV-positive performers want to save others from the same fate.

Government Shutdown Deadline Approaches

Government employees are expected to be the hardest hit.

Woman Who Lost Pregnancy After Lover Switched Her Pills Wanted to Be a Mom

Remee Jo Lee said she told John Andrew Welden she wanted to keep the baby

Football Helmet Technology Controversy

Can new technology really help prevent dangerous concussions? "Nightline" investigates.

Army Staff Sgt. Brandon Pickett Surprises Son at Football Game

Army Staff Sgt. Brandon Pickett pulled off the surprise after a 9-month deployment to Afghanistan.

'This Week': Bill Clinton on Shutdown Showdown

Former President Bill Clinton weighs in on the government shutdown threat.