Maya developed a wealthy, regal civilization, then mysteriously disappeared. Researchers search for reasons.
In the 7th century BCE, Egypt was conquered. Out of the ashes rose an army, burning with vengeance.
Led by a great general, the Macedonians would forge an empire that stretched from Greece to the Indus River.
Unflinching discipline was the greatest weapon of the world's greatest army of its time – the Roman Legion.
When the Normans invaded England in 1066, the knights would either win England or be sent to an English grave.
The Celts were as wild as the hills they emerged from – so frightening that foes would turn and run from them.
The Assyrians conquered an empire, plundered Babylon, and enslaved the tribes of Israel.
A trip to Wings Over the Rockies Air and Space Museum for veteran interviews and a training mission.
Hitler's final moments have long seemed beyond reach. But newly revealed archives expose his last thoughts.
Hacking Democracy sheds light on the hackers and people in power orchestrating chaos in populist societies.
Six Jewish women found themselves deported to the notorious concentration camp, Auschwitz-Birkenau.
Examine the clues Hitler left for his dark vision of Germany's abhorrent future in his treatise Mein Kampf.
Aircraft carriers are vital symbols of a nation's nuclear might. Trace the history of these mighty warships.
For the first time, children born into the 'Lebensborn' program find out the dark secret of their origins.
The Book of Revelations is known to be a detailed description of the end of the world.
By risking his own life, Kennedy helped Indianapolis avert the violence that swept the rest of the country.
With the civil rights movement gaining momentum, the KKK march in the South once again.
In 1865, a handful of Southern Civil War veterans founded a secret society: the Ku Klux Klan.
The Century Series defined the Cold War era of aviation, charting a shift from one time period to another.
New firefighting methods are helping CAL FIRE, the world's largest municipal fleet of firefighting aircraft.