The History Channel

Tsunamis are one of the most terrifying forces of nature, destroying all in their path. The December 26th Tsunami is estimated to have released the energy of 23,000 Hiroshima-type atomic bombs. What are the enormous forces that generate these catastrophic waves deep on the ocean floor? With 50% of the world's population living within a mile of the sea, this episode looks at what could happen in the future. East coast cities from New York to Miami face the threat of a truly colossal wave that could be generated by the collapse of an active volcano off the coast of Africa.

Africa's Sahara Desert is the size of the United States, making it the largest desert in the world. It's also the hottest place on the planet. But now an astonishing series of geological discoveries has revealed this searing wasteland hides a dramatically different past. Scientists have unearthed the fossils of whales, freshwater shells and even ancient human settlements. All clues to a story that would alter the course of human evolution and culminate in biggest climate change event of the last 10,000 years.

Home to the legend of the Loch Ness Monster, this lake holds more water than any other lake in Britain. It's only 10,000 years old, but billions of years in the making. Trace the extraordinary story of Loch Ness: from the three billion year old bedrock of Northern Scotland, to the giant glaciers that carved out the Loch. On this incredible journey we reveal that Loch Ness was once part of America, giant dinosaurs, suspiciously similar to the fabled monster once roamed the area, and that the entire region was engulfed by huge volcanic eruptions as Scotland was ripped from its birth place on the American continent. Could the mythical Loch Ness monster be a descendant of the dinosaurs, somehow surviving in the murky waters of the loch?

Deep in the Rust Belt the white collar and blue collar divide has shaped our cities and our states. How did this rivalry change the way we all bring home the bacon?

It's a rivalry that tears us apart every four years, but how did our nation divide into red states vs. blue states, and what happens to the states caught in the middle?

Yellowstone National Park is one of the most dangerous geological features on Earth. In trying to uncover the processes behind Yellowstone's main attractions like "Old Faithful," geologists came to the frightening realization that Yellowstone was in fact a vast hidden super-volcano--one that is overdue for a massive eruption. Yellowstone has been on a regular eruption cycle of 600,000 years but the last eruption was over 640,000 years ago, so the next is overdue. An eruption at Yellowstone could be 2,500 times the size of the 1980 Mount St. Helens event. In the past 16.5 million years, the volcano has mysteriously moved hundreds of miles though Nevada across southern Idaho to reach its present location in Yellowstone. But even today it is still active. A swarm of 500 earthquakes hit the park early in 2009 and geologists found that the entire park is being pushed up into the air by hidden forces under the ground. Is this sleeping giant beginning to stir?

Clues to human extinction are discovered in the Dinosaur's apocalypse.

Travel to Egypt and join a team of archaeologists who have uncovered what evidence reveals is the lost fourth pyramid of Giza. Radjedef, son of the great Khufu, would stamp his supremacy by erecting the highest pyramid ever built, towering some 60 feet above Khufu's Great Pyramid of Giza. However, Radjedef's pyramid was forgotten and almost buried beneath the encroaching desert sands and its significance to the three great pyramids was lost. State-of-the-art CGI demonstrates how all four pyramids were connected. Interwoven through the exciting finds of this new excavation is the story of the most powerful, prolific, and arguably, the most cruel and debauched of all Egypt's dynasties.

The San Andreas Fault runs roughly 800 miles through some of the most valuable real estate in the world. The southern section hasn't had a significant quake for over 300 years and is now primed and ready for another "big one." This new series takes a trip along the most famous fault line in the world and examine the geology that gives it its immense destructive power. It's an investigation given new urgency by recent warnings from 300 of America's leading scientists about the death and devastation that a major earthquake on the fault could unleash on Los Angeles.

Today, New York is the biggest city in the country... but it's got some dark secrets in its past. It was founded by covert groups, overrun with gangs and mob bosses, and ruled by secret societies. This is the true foundation of the city that never sleeps, and host Don Wildman is headed deep beneath the skyscrapers, taxicabs and street vendors into a New York that few have ever seen before. From a hidden Freemason tunnel and secret world of the Sandhogs, to mobster hideaways and gang escape routes, we're uncovering the secret societies that built New York--from the underground up.

What was the secret to the success of ancient Rome? Aqueducts, underground neighborhoods and one of the oldest sewer systems reveal many secrets. The largest and most influential empire in history leaves clues to her greatness under nearly every street. Search subterranean locales for proof that ancient Roman design inspired many modern engineering marvels. Join host Eric Geller as he exposes city upon city and the technological marvels that allowed it.

Welcome to Las Vegas, America's Sin City where casinos have made security their highest priority. Join hosts Don Wildman as he uncovers underground vaults, secret surveillance nerve centers, and how the latest technology beats the cheaters. Don shows how a massive engineering feat transformed the city from a barren desert into a mobster metropolis where thieves ran the show from underground tunnels dating back to Prohibition. Vegas is the only city in the world where you can be in Egypt one moment and Italy the next, thanks to a secret underground.

Gunny takes a journey through the history of cannons and field artillery and shoots off everything from Revolutionary War-era cannonballs to the futuristic shells of NLOS-C -- a fully automated piece of artillery that's so new the Army's still testing it. Other featured artillery includes Civil War cannons and the Pack 75 Howitzer, a World War II cannon used in the Battle of the Bulge.

Informational programming.

Informational programming.

Informational programming.

Informational programming.

Watch as a helicopter in Hawaii crashes and a huge man named Tiny lifts the 1,500 pound chopper by himself, enabling rescuers to pull the pilot out. When a gas tanker explodes on an Oklahoma freeway, area residents have their video camera rolling. In Ohio, the driver of a BMW flips over 13 times before coming to a crashing stop. Next a kayaker in France gets caught in a vicious torrent, turned upside down and cannot right the kayak. Cameras are rolling in the town of Punta Gorda, Florida as storm chasers are caught in the eye of Hurricane Charley. Finally a chariot race for fun turns disastrous as the chariot breaks, and the driver is catapulted 30 feet in the air.

Clues to human extinction are discovered in the Dinosaur's apocalypse.

Travel to Egypt and join a team of archaeologists who have uncovered what evidence reveals is the lost fourth pyramid of Giza. Radjedef, son of the great Khufu, would stamp his supremacy by erecting the highest pyramid ever built, towering some 60 feet above Khufu's Great Pyramid of Giza. However, Radjedef's pyramid was forgotten and almost buried beneath the encroaching desert sands and its significance to the three great pyramids was lost. State-of-the-art CGI demonstrates how all four pyramids were connected. Interwoven through the exciting finds of this new excavation is the story of the most powerful, prolific, and arguably, the most cruel and debauched of all Egypt's dynasties.