During WWII, military aviation truly came of age. In six brief years, aircraft evolved from fragile wood and fabric biplanes to jet powered fighters capable of more than 500 miles an hour.

Of the 100 probes that have been sent out into space, only one probe - Voyager 2 in 1989 - has ever sent back any information about the solar system's outer planets.

Have you ever wondered what it's like to be a National Geographic photographer? Or how they get those one-in-a-million shots? Get the backstory on some of the magazine's most compelling pictures.

How do you grasp an event as enormous as September 11?

They were the terror of the sky, a small band of American mercenaries who soared into battle against the Japanese in defense of China's freedom.
In 1941, with the U.S. government's tacit approval, retired Army Air Force Captain Claire L. Chennault, then a colonel in China's Air Force, formed the mercenary American Volunteer Group to fight Japan. Later dubbed Flying Tigers, these brave pilots set records yet to be equaled in the annals of aerial history.
Against all odds, these true war heroes exceeded the limits of aerial warfare. Living on the edge, on a starvation diet, outnumbered and under-equipped, the Flying Tigers turned adversity into incredible success. With only 29 P-40's, The Flying Tigers shot down 296 confirmed enemy planes and 300 more probables. The AVG also destroyed 573 bridges, 1,300 riverboats and innumerable road vehicles and killed thousands of Imperial Japanese army soldiers. Their combat success has yet to be equaled to this day!
Through rare footage of the legendary pilots and their rugged P-40 Warhawks in action as well as interviews with surviving Flying Tiger members, this program examines the often overlooked exploits of the American Volunteer Group, the Flying Tigers, who - under the command of Gen. Claire Lee Chennault - aided the Chinese in their fight against the Japanese prior to America's entry into World War II. This is their story.

Written & Produced by John Copeland ; A Netter Digital Entertainment, Inc. Production for The History Channel

Josiah Henson, a dynamic man with unyielding principles, overcame incredible odds to escape from slavery with his wife and children.

Overlooking Swansea are the old housing estates of Mayhill, Townhill and Penlan.

Over half a century since she first performed her songs, Nina Simone is more popular than ever.

Ellie Flynn reports on the true scale of sexual misconduct by serving British police officers, including personal accounts from those who presented themselves to the police as the victim of a crime, and long term partners of serving officers who have endured domestic violence and abuse.

This is the story of the rise and fall of the Third Reich told like the drama it really was: through the personal relationships of the movers and shakers of the Nazi Party.