National Geographic HD

Molly is laced with methamphetamine or made with dangerous synthetics; the party drug has become a menace in Atlanta, where police officers are fighting back; enhanced.

Drug dealers use extreme violence on the streets of Oakland, Calif., while elite undercover detectives aim to bring them down.

The players, dealers and doctors behind the drug trade in Los Angeles; enhanced.

Regain independence and enjoy greater mobility with the compact design and long-lasting battery of portable oxygen.

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Celebrate America's 250th Anniversary with two ANACS MS70 First Strike Silver Eagle overstrikes featuring Declaration of Independence and Independence Hall privies, historic dual dates and Daniel Carr artistry.

Paid programming.

Paid programming.

When it comes to Medicare coverage, there are a lot of options. Learn about your choices so that you can select the coverage that's right for you. Call to speak with a licensed Aetna agent today.

Trains, planes, and ships collide; exploring ten global collisions.

Exploring various catastrophes that have happened in mankind's quest to conquer space, from the Apollo 1 tragedy to the Challenger and the Columbia disasters.

Explore the railways where extreme conditions turn travel into a perilous test.

Examine infamous cults, where devotion turns dangerous and tragedy unfolds.

Explore Earth's harshest places, where beauty, danger and survival collide.

Natural disasters reveal Earth's fierce power and our struggle to withstand it.

Explore powerful industrial machines, where precision meets extreme danger.

Perilous roads worldwide reveal how travel can turn deadly in an instant.

Explore the extreme airport runways where landings push pilots to their limits.

The widow of a CIA officer killed in action chooses to take up the mantle, becoming the first woman to go undercover in Moscow and handle an important Russian source of the Cold War.

A former special forces soldier turns CIA officer gets the rare opportunity to meet with an enemy Taliban leader.

A newly-assigned director for counterterrorism spearheads the CIA's enhanced interrogation program to find those behind the attacks of September 11.

A father's mission to bring justice to a feared member of the Taliban reaches a turning point when a teenage boy within his inner circle is captured during a raid.

The unforeseen arrest of an American in Pakistan threatens a secretive mission in CIA.

A former CIA chief of base utilizes her knowledge in a volunteer effort to rescue people during the 2021 U.S. withdrawal from Afghanistan.

Explore the extreme airport runways where landings push pilots to their limits.