Dan Nachtrab

Two teams of experts go to extraordinary lengths to take shark science into the wild as they investigate two of the most iconic shark superpowers - speed and bite force.

The world's leading scientists and cinematographers relive 5 extraordinary shark feeding events. From being surrounded at night by 700 grey reek sharks, a 300-strong gathering of blacktip, dusky and bronze sharks feeding on thousands of bait fish, to the spectacular sight of more than 200 blue sharks feeding on the carcass of a seven ton whale; the Great Shark Chow Down is an epic celebration of sharks from around the world.

Shark scientist Dr. Michael Heithaus embarks on a mission to reveal the mysterious connection between sharks and volcanoes.

All across YouTube, viral videos abound of great whites and other sharks attacking boats with a ferocity and anger that has never been seen before. The question is, why? Is this simply a case of more people having cameras to video the behavior, or is something else happening? Dr. Mike Heithaus and Ph.D. candidate Sara Casareto set out to investigate what’s causing this clash between sharks and boats.

Discover what happens when two of the deadliest predators face each other.

Gorillas and Chimpanzees struggle for power and dominance within their clans.

In the mountains of Peru, an environmental scientist discovers ancient artifacts submerged beneath the headwaters of the Amazon; his findings could save this sacred landscape from mining devastation.

The discovery of Gobekli Tepe 20 years ago changed our understanding of the history of humankind. Now, newly-discovered skull carvings reveal even more about how and why civilized societies developed.

A Tubi original documentary that delves deeply into one of the most famous and exploited hauntings in the United States.

Follows shark experts investigating unusually high great white activity around a seal and sea lion colony off Australia's Greenly Island.

For years, the smaller, unremarkable-looking bull shark has come in third behind the great white and tiger sharks when it comes to deadly attacks on humans. But as climate change warms the world's waters, and its territory begins to spread, the bull shark enters the ring to prove its worth and leave with the title of the world's most dangerous shark.

Earthquakes, tsunamis, volcanic eruptions, and extreme weather. Has Earth always been this way? Featuring footage of top geologic hot spots on every continent, the film traces the scientifically-based story of the 4.5 billion-year-old Earth, from the core to the crust and up into the atmosphere.

In the darkest days of World War II, St. Peter's was shrouded in the shadow of the swastika. But even as the Führer surrounded him, the Pope was plotting a secret counter-offensive. Wartime Pontiff Pius XII has been derided for his public silence about the Holocaust. But evidence suggests his silence may have been subterfuge.

A followup to CET's Emmy Award-winning documentary, Cincinnati Parks: Emeralds in the Crown, this documentary takes a closer look at the history of Ault Park. The park was donated to Cincinnati by Levi Addison Ault, who also led the first Board of Park Commissioners and developed a plan for a city-wide park system. Like Eden Park, grand architecture, breathtaking landscape and community events draw Cincinnatians to visit. The history and architecture of the park's iconic pavilion is explored, as well as monuments and other pieces of public art.

Behind Hollywood's iconic landmarks lies a realm of eerie legends and ghostly tales. Discover the chilling stories of Tinseltown's most haunted sites.

The B-17 Flying Fortress became an icon of American air power in World War II, but its legacy is written by the stories of the crews who flew it. Today, of the more than 100,000 veterans who flew on board of B-17 bombers during the war, there are only a handful remaining-but through years of searching, a few of the final survivors were brought together to tell this story one more time.