Jeremy Wade examines and explores some of the planet’s largest waterways to understand how exploitation and pollution are contributing to the destruction of rivers that were once the lifeblood of communities.

Set in Central Michigan’s farm country, this reality series follows the work done at Pol Veterinary Services. Specializing in large farm animals, Dr. Pol treats horses, pigs, cows, sheep, alpacas, goats, chickens and even an occasional reindeer. The program also features Dr. Brenda Grettenberger, who has worked with Dr. Pol since 1992.

Extreme angler Jeremy Wade is on the hunt for fish with a taste for human flesh. This rip-roaring ride mixes action and adventure with mysteries, edge-of-the-seat chase and a battle of wills between man and nature.

An Unexpected Killer takes a wild and unpredictable journey into homicide investigations where the true identity of the killer comes as a shocking surprise. Combining unparalleled access, captivating interviews and stylish reenactments, each investigation starts in a familiar way – examining the crime scene, interviewing potential suspects… but then something unexpected changes everything. A new witness, an overlooked piece of evidence or even an innovation in forensic science sends investigators on a totally unexpected path that ultimately leads to the conviction of the real killer.

Not Available

A deathbed confession made by a lighthouse keeper in the 1890s leads Kevin Dykstra and his team to believe there is Civil War gold to be found in Michigan.

The stakes on the mat are high, but for these cheerleaders, the only thing more brutal than their workouts and more exceptional than their performances are the stories of adversity and triumph behind the athletes themselves.

From fangs to claws to venomous stings, they all wield deadly weapons. But which creature will be crowned the fiercest of all?

Concorde is a two-part documentary telling the story of the supersonic passenger jet.

With the explosion of infographics and big data, maps aren’t just about geography anymore. They can tell us all kinds of things about the human experience. National Geographic Channel’s new series “The Big Picture With Kal Penn” is all about finding the unexpected — and sometimes surprising — realities in both the world at large and our own backyard, revealed by crunching the numbers and finding new ways to visualize data. Host and producer Kal Penn is taking viewers on a journey to understand how things like money, sex, food, sports and crime influence our daily lives. Exploring and generating infographics from information banks and data analyses, we investigate different themes through the mapping of new data, the creative visualization of information, and in-depth personal stories with fascinating characters.

The real-life adventures of a high-altitude helicopter rescue team patrolling Mount Everest are followed in this series, which begins with life and limb being risked to extract two separate injured climbers, both from 21,000 feet. Also: The ARS team provide emergency medical relief to a local boy suffering from a potentially fatal condition.

Matt & Amy Roloff enlist the help of their four children Jeremy, Zack, Molly & Jacob to help expand the business of Roloff farms. As the kids grow older, the family grows larger and the Roloffs learn how to keep their family relationships strong.