Dr. Jan Pol has been a practicing veterinarian for more than half his life. In 1981 he and his wife, Diane, opened a vet business out of their home, and over the years it has grown to service more than 19,000 clients. 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.

When bears, wolves and foxes are your only neighbors, life can be pretty lonely. Add minus-60-degree days and a constant battle for the most basic necessities, and you have the daily challenges of people who live in remote corners of Alaska. This series takes viewers deep into an Alaskan winter to meet tough, resilient residents as they try to stay one step ahead of storms and man-eating beasts to survive the season. The closest neighbor to Sue Aikens is more than 300 miles away. Eric Salitan subsists solely on what he hunts and forages. Chip and Agnes Hailstone catch fish for currency in bartering for supplies, and Andy and Kate Bassich use their pack of sled dogs for transportation. Also highlighted is a time of year not always part of what viewers see in Alaska: spring! Ice is breaking, animals are waking, and residents face new tests before deep cold returns.

Investigating the world's most clever and savage predators.

Throughout America's coastline shark attacks are on the rise. Many occur in quick succession at new and surprising locations. As vacationers, scientists and locals are all desperate to uncover what is causing the upsurge, National Geographic Channel investigates the attacks to see what is affecting some of nature's most feared fish. The deep-sea saga employs underwater photography, news archives and testimony to deep dive into mysterious and deadly recent shark attacks.

Dream adventures turn into hellish nightmares for the travelers featured in this series, which recounts through firsthand interviews and re-enactments terror-filled experiences of being arrested in a foreign country, usually for drug smuggling, and how they coped with the resulting lengthy prison terms. Viewers also hear from people directly involved with the arrests, whether it's the undercover agents gathering the evidence against the suspects, or the people making the drug dealing offers.

National Geographic Channel turns its state-of-the-art cameras on America for a close-up of its national parks. More than three years in the making, the eight-part series goes beyond the homegrown beauty to allow viewers to witness moments full of drama, watch stories of life and death, and discover hidden gems in high-tech ways heretofore never presented on TV. Each hourlong episode features one park, from the geysers of Yellowstone and the hot desert of Saguaro to the sprawling Smoky Mountains and world-famous Grand Canyon.

Silicon Valley circa 1990s was a technology breeding ground that attracted visionaries and charlatans alike, spawning some of the world's most influential people and recognizable brands. Set during that time, this six-part limited series follows the turbulent ride of three different companies whose founders were trying to change the world using the emergent technology of the internet. Creator, director and executive producer Matthew Carnahan ("House of Lies") employs a hybrid of scripted storytelling and documentary interviews with the key players whose stories are dramatized in the show. Emmy winner Bradley Whitford ("The West Wing") leads the ensemble cast.

Suspenseful nature stories begin just before sunset and end just after sunrise; from Costa Rica to Indonesia to the swamps across the United States, creatures of the night battle for survival when the sun goes down.

Consistently stunning documentaries transport viewers to far-flung locations ranging from the torrid African plains to the chilly splendors of icy Antarctica. The show's primary focus is on animals and ecosystems around the world. A comic book based on the show, meant to be used an as educational tool for kids, was briefly distributed to museums and schools at no cost in the mid-2000s.

The 1990s had remarkable highs and lows: Technology paved the way for a digital world, and the ranks of billionaires grew fast. But the Columbine massacre, al-Qaida threat, and Clinton scandals also happened. On the heels of its popular miniseries deconstructing the 1980s, National Geographic Channel delves into 10 years when the Web was wide open but before global terror hit hard. "The '90s: The Last Great Decade?" features 120 original interviews -- from unsung heroes of riveting stories, to notables in many fields -- and memorable clips of a time between the end of the Cold War and the approaching War on Terror.

Africa is home to some of the deadliest creatures of all, and in this series, you'll see them.

Unlocking ancient Egypt's greatest mysteries.

Put up your dukes -- er, paws -- and prepare to discover epic, bone-shattering clashes between some of the world's deadliest predators. From lions, tigers and bears to meerkats, mongoose and mice, the series features testosterone-induced battles between some of the biggest, baddest and often surprising fighters in the animal kingdom, revealing the extraordinary motivations and strategies that fuel each incredible brawl.

Patrolling America's largest state is the job of roughly 400 troopers in one of the toughest law enforcement agencies in the nation. Essentially, these cops say, nearly every Alaskan resident is armed and they know how to use their weapons, which makes any scenario a trooper encounters a potentially fatal one. Follow along as the "blue shirt" Alaskan State Troopers police the towns and villages, and the "brown shirt" Alaska Wildlife Troopers enforce regulations covering both commercial and sport fishing and hunting activities.

Maritime mysteries -- old and new -- come to life in this 10-episode series, combining scientific data and digital re-creations to reveal shipwrecks, treasures, and sunken cities on the bottom of lakes, seas and oceans around the world. Innovative technology allows viewers to see what lies on the floors of large bodies of water such as the Gulf of Mexico, the Nile, the Indian Ocean, the Baltic Sea and the Atlantic Ocean as if they had been drained. Then, in a quest to explain natural wonders and man-made catastrophes, stories tell of how vessels sank, what ancient geological formations reveal about life on Earth, where Nazi secrets now reside, and why so many continue to search for the legendary city of Atlantis.

Beyond the battle scars and the fortifications from decades of conflict, South Korea still boasts areas of great wilderness with intriguing animals, some of which share extraordinary relationships with humankind.

The producers of National Geographic Channel's hit series "Life Below Zero" are behind "Port Protection," which profiles individuals trying to survive way above the Lower 48. Surrounded by the North Pacific, Port Protection is a remote community tucked into the northwest corner of Prince of Wales Island, Alaska. The approximately 100 residents who call the rugged, unforgiving land home push the limits of survival, living an isolated and risky existence of self-reliance with no roads, government or law enforcement. However, they think the risk is worth the profound reward: a world of beauty with the security of community without the constraints of bureaucracy.

How does the drug trade work? Can it be stopped or should it be regulated? And what are the personal costs? Those are just some of the questions asked in this series, a comprehensive look at society's most abused drugs: cocaine, methamphetamine, heroin and marijuana. First-person perspectives from traffickers, dealers, users, law enforcement and medical professionals detail how the drugs are processed and moved onto the streets, and the effects they have on the human body. It's a raw, eye-opening documentary about a billion-dollar industry.

The daily and subsistence activities of the inhabitants of the most frigid areas on the planet.

Cameras follow the action along Arizona's Sonoran Desert, one of the busiest border crossings in the country, as officers and agents of U.S. Customs and Border Protection fight terrorism, apprehend drug smugglers and intercept people entering the United States illegally. The series also embeds with Customs and Border Protection, and with local law enforcement, as units patrol near and on the border in South Texas.