Nightline from ABC News

Meet the controversial filmmaker who claims he knows President Obama has a secret agenda.

Storm slams into the Gulf coast with millions in its path, bringing massive flooding and tornadoes.

Adrenaline junkies teeter on the edges of buildings without a harness in extreme YouTube trend.

Part 3: Indigenous people have "harvested" off the land for centuries in order to survive.

French officials release report on one of the worst airline crashes in history.

Wildlife experts re-train these creatures to hunt, kill and date in the wild.

Newborns go through withdrawal after their mothers were hooked on painkillers.

"Nightline's" Bill Weir launches quest to get in tune with "Bieber Fever."

More women are signing up to pay for sex in no-strings-attached situations.

Part 1: The mythical creatures known as the "unicorns of the sea" are threatened by climate change.

Speculation rising for Sarah Palin's possible White House bid.

After a lifetime of diets, Holly Matherne made a drastic decision for her health