SkyHistory2HD

Researchers study giant ancient drawings found etched into the desert floor, which may be a part of an ancient alien code.

Could Area 51's notoriety act as a cover up to much bigger, top-secret extraterrestrial experiments taking place at multiple locations.

Weapons designed for everyone hand a sizeable advantage. Experts explore three weapons that are easily used: the crossbow, a pike and the Kalashnikov.

In 1944, D-Day pierces the Atlantic Wall, as Operation Bagration crushes the Wehrmacht in the East. The fall of the Third Reich begins.

Step foot on the roller-coaster ride that is cracking humanity's most complex and important code - the Human Genome. Season finale.

Researchers study giant ancient drawings found etched into the desert floor, which may be a part of an ancient alien code.

Could Area 51's notoriety act as a cover up to much bigger, top-secret extraterrestrial experiments taking place at multiple locations.

When terrorists kidnap more than 200 schoolgirls in northern Nigeria, rescuers use satellites to track them down.

New evidence could lead to the discovery of an unknown ancient civilization in the Amazon rainforest and an unidentified submarine is spotted in a North Korean shipyard.

A giant chasm opens in Siberia, dubbed a gateway to the underworld. Meanwhile, an entire island mysteriously vanishes without a trace.

A bright green swirling spiral appears in the seas of the Persian Gulf and a massive complex suddenly appears in Myanmar.

Strange images from a remote and empty desert could explain the mysterious mummies found there and an apocalyptic sandstorm swallows the Middle East.

Mutant Mermaid, UFOs vs Nukes and Seamonster Chases a Boat: Is a dead mermaid really preserved in Japan? And are UFOs attracted to nuclear facilities.

In 1944, D-Day pierces the Atlantic Wall, as Operation Bagration crushes the Wehrmacht in the East. The fall of the Third Reich begins.

Step foot on the roller-coaster ride that is cracking humanity's most complex and important code - the Human Genome. Season finale.

In Nazi Germany, questions about witchcraft attracted SS leaders. Himmler, dedicated to an Aryan super race, established a team to research witchcraft.

As one of their most controversial scientists, Heisenberg was key in the Nazis' efforts to build an atomic bomb. How close was he to achieving his goal.

Researchers study giant ancient drawings found etched into the desert floor, which may be a part of an ancient alien code.