National Geographic HD

The mighty Inca Empire collapsed in less than a decade to Spanish conquistadors.

In June 2020, scientists discovered Aguada Fénix, a monumental 3,000-year-old Maya structure, and uncovered the secrets of this ancient monument.

New evidence unearthed in Mexico's Yucatan begins to transform long-held ideas about the growth of the Mayan civilization.

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

Join your hosts Kevin Cash & Cory Cady as we discuss the 250th Anniversary of America with the official "America 250" logo on a Silver American Eagle label; we are locking in orders for this iconic release, but coins are limited! Don't miss out!

The Medicare annual election period ends on December 7th. Watch and learn about Humana Medicare Advantage plans.

Paid programming.

See how one company is changing people's lives by helping them put their tax problems to rest.

The Medicare annual election period ends on December 7th. Watch and learn about Humana Medicare Advantage plans.

An attack on a small religious community on the holy island of Lindisfarne in A.D. 793 heralded the start of the Viking age of conquest and expansion; the Vikings' beginnings in Scandinavia.

The Siege of York occurred from 866 when the Great Heathen army laid claim to the Northumbrian capital of York; looking at the major battles, players and strongholds in ninth-century England.

The Silk Road opened up a world of trade for the Scandinavians in the East; seeking further wealth, the Vikings known in the East as "the Rus" attacked Constantinople in 860.

The siege of Paris in 885 was the culmination of the Viking invasions of Francia; looking at the persistent Viking attacks on Francia and the enduring presence of the Scandinavians on the Frankish Empire and beyond.

Political turmoil in Norway leads a voyage of discovery west. The Vikings discover Iceland where they established lasting settlement. Further exploration from Iceland leads to the discovery of Greenland and to the shores of Newfoundland, making them the first Europeans to discover America.

The mid-10th-century reign of Harald Bluetooth as king of a newly unified, powerful and Christianized Denmark marked the beginning of a second Viking age. But the reign was not to last with the Normans finally winning the English Kingdom in 1066. We look at the final days of the Viking empire.

Alaskans face long days and uncertain outcomes during trapping season.

Alaskans must adapt to new obstacles to survive in deep winter.

Alaskans are forced to embrace their inner warrior as winter deepens.

Alaskans soldier through the heart of dark winter in pursuit of the resources they desperately need for survival.

The women fight through ice, snow and cold in the unmerciful Alaska winter.

The women confront the worst of winter as the elements hit with full force.

Hazards on the trail put the women's winter goals in jeopardy.

Out-of-control wildfires rip through Australia during the 2019 Black Summer.

Three real-world disasters forensically dissected: Fukushima nuclear plant, a Manhattan crane collapse, fire on the aircraft carrier USS Forrestal.

Hazards on the trail put the women's winter goals in jeopardy.