The life stories of history's greatest minds. From their days as young adults to their final years we see their discoveries, loves, relationships, causes, flaws and genius.

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.

The world’s most loved dog behaviorist, Cesar Millan, rescues neighborhoods terrorized by badly misbehaving pooches. Each week, Cesar is called in by whistleblowers who tell on the four-legged thugs who scare neighbors, clients, friends, and even family members! Cesar surprises dog owners to witness the chaos firsthand and uses his unmatched expertise to bring balance to the dogs and humans.

Host Neil deGrasse Tyson brings together celebrities, scientists and comedians to explore a variety of cosmic topics and collide pop culture with science in a way that late-night television has never seen before. Weekly topics range from popular science fiction, space travel, extraterrestrial life, the Big Bang, to the future of Earth and the environment. Tyson is an astrophysicist with a gifted ability to connect with everyone, inspiring us all to to "keep looking up."

Hosted by Argentine television personality Alejandro Marley, this series combines hard data and scientific observation with some of the most outrageous, hilarious and spectacularly-painful bloopers ever recorded on video.

The maiden crew of the Daedalus spacecraft must push itself to the brink of human capability in order to successfully establish the first sustainable colony on Mars. Set both in the future and in the present day, this series blends scripted elements set in the future with documentary vérité interviews with today’s best and brightest minds in modern science and innovation, illuminating how research and development is creating the space technology that will enable our first attempt at a mission to Mars.

Nazi diehard and fanatics fight to the last man to stop Allied forces from freeing Europe, keeping an unrelenting grip on the naval bases, citadels and fortresses of occupied Europe.

Morgan Freeman presents his quest in order to find how most religions perceive life after death, what different civilizations thought about the act of creation and other big questions that mankind has continuously asked.

A 360-degree view of the trafficking world from the point-of-view of the traffickers, law enforcement agents and those caught in the crossfire with access only National Geographic can provide.

Doomsday Preppers is an American reality television series that airs on the National Geographic Channel. Dräger Equipment, Wise Food Storage Company and the United States Gold Bureau are sponsors of the show.

Dr. Noel Fitzpatrick is one of England's top veterinarians. "Supervet" showcases Fitzpatrick and his staff treating hard-to-cure ailments with innovative care and surgical techniques. The program gives the often-emotional stories of pets, owners and the passionate team that pushes boundaries of medicine to save animals from life-threatening conditions. Nicknamed the Bionic Vet, Fitzpatrick employs more than 100 people at his neurosurgery/orthopedic clinic in Surrey, England.

Africa is a land sculpted by time where animals have evolved complex weapons to arm them in the battle to live another day. An elephant's tusks can defend, or attack. An octopus uses camouflage to find food, or hide from an enemy. A Cape Fur Seal's speed and agility are valuable tools to catch a penguin, but ineffectual against a Great White Shark. A single hippopotamus holds a pride of twelve lions at bay with his sheer bulk, but backs down when faced with the piercing teeth of another hippo. With lethal weapons wielded by fearsome predators and prey, animals walk a precarious path, here among Africa's Deadliest.

An immersive, action-packed and discovery-led series following International teams of Egyptologists as they unearth the world's richest seam of ancient archaeology - Egypt's Valley of the Kings.

A rare look at warring animal clans battling for survival in a remote region of Africa, which is drying up after years of flood-soaked abundance.

Octopuses are like aliens on Earth: three hearts, blue blood and the ability to squeeze through a space the size of their eyeballs. But there is so much more to these weird and wonderful animals. Intelligent enough to use tools or transform their bodies to mimic other animals and even communicate with different species, the secrets of the octopus are more extraordinary than we ever imagined.

Spanning thousands of acres and incorporating hundreds of species of animals; Michelle Oakley’s veterinary practice is Yukon tough. There is no such thing as a typical day in Michelle’s practice. House calls can range from expelling dogs anal glands to getting chased down by the very large Arctic musk-ox. Accompanied by her teenage daughters and armed with humor as sharp as scalpel, Michelle deftly juggles being a full time Veterinarian, wife and doctor; taking us into unexplored and unexamined regions of the Yukon.

In official collaboration with the 9/11 Memorial & Museum, this documentary series takes viewers through harrowing moments of the historic morning of September 11, 2001.

An adrenaline-fueled ride through the culture of speculation, innovation and disruption during Silicon Valley’s unprecedented tech boom and subsequent bust in the 1990s. This mostly scripted series weaves in select documentary elements that help tell the true inside story of the internet’s formative years.

Relive a heroic fight for survival during the Iraq War, when the 1st Cavalry Division from Fort Hood was ferociously ambushed on April 4, 2004, in Sadr City, Baghdad — a day that came to be known in military annals as “Black Sunday.”

As the weather warms up in Durban, S.A., deadly venomous snakes enter homes, offices, and factories. Streetwise snake-catcher Simon Keys and his partner Siouxsie Gillett, rush across the city to save snakes...and people. From deadly black mambas in wardrobes to cobras in factories, Simon and Siouxsie put their lives on the line to catch these deadly invaders - by hand. Their reward? Watching the snakes slither away unharmed, back into the wild.