Nine modern-day warriors rely on the lessons of the ninja after being dropped into three brutal environments, including a frozen glacier, a frigid swamp and a wind-battered mountainside.

Isolated and alone, each exhausted survivalist must prove themselves in a grueling, overnight solo mission; those who survive the final challenge will travel to Japan to receive a final lesson from a Ninja master.

Captured, bound and blindfolded in the dark of night, the warriors must escape the frigid Canadian wilderness before sunrise; one survivalist goes rogue.

Racing against time, the survivalists must carry a 125-pound captive through brutal terrain, including sheer drops, mountain gorges and frigid waterfalls; one warrior is given an ultimatum by his teammates.

To cross a 90-foot vertical gorge, the survivalists must work together to build a rope bridge; one warrior must overcome a debilitating fear to complete the challenge.

Rafting through frigid, mountain rapids tests the survivalists' will and ability to work together. A brutal injury could take one of the warriors out of the challenge.

Pushed to their limits on a barren, battered island, the nine survivalists are desperate for food, water and fire; the brutal conditions causes one warrior to reach a breaking point.

Modern-day warriors embark on eight grueling missions created by Jinichi Kawakami, Japan's last ninja; with limited food and water, the warriors endure extreme weather conditions and challenges while attempting to live like ninjas in ancient Japan.

Veteran survivalists familiar with the stripped-down drill after appearing on "Naked and Afraid" attempt to survive in a desolate, dangerous environment for 40 days -- 19 more than they previously experienced on the show. Pushing the very limits of human endurance, the men and women must all vie for the same limited food, water and shelter while avoiding territorial-sensitive predators and venom-filled reptiles. Because there is no other choice, the competitors quickly get to know one another -- and their surroundings -- and hope that their instincts, survival skills and intestinal fortitude serve them well. This "uncensored" edition features additional information not seen in original episodes that sheds light on the competition and the survivalists.

Men and women from all walks of life and every corner of the country come together to pursue their common dream of reaching Mount Midoriyama on the world's most notorious obstacle course. Each possessing an inspiring story and a memorable personality, these unrivaled athletes push through seemingly impossible tests of strength and endurance. Though few have ever finished the course, the challengers stop at nothing as they take on a growing number of competitors and an ever-changing set of obstacles.

TV's most extreme survival challenge just grew extra-large. Veteran survivalists familiar with the stripped-down drill after appearing on "Naked and Afraid" attempt to survive in a desolate, dangerous environment for 40 days -- 19 more than they previously experienced on the show. Pushing the very limits of human endurance, the men and women must all vie for the same limited food, water and shelter while avoiding territorial-sensitive predators and venom-filled reptiles. Because there is no other choice, the competitors quickly get to know one another -- and their surroundings -- and hope that their instincts, survival skills and intestinal fortitude serve them well.

"American Tarzan" welcomes five men and two women to the remote Caribbean island of Dominica and asks them to not only survive the wild but also to master it. Mimicking a time when man was truly Tarzan-like -- stalking prey, climbing to treetops, utilizing every resource to stay alive -- the competitors live off the land while they traverse a brutal obstacle course highlighted by a distinct jungle, the coast, a mountain and a canyon. They face conditions that early inhabitants tackled hundreds of years ago, relying on nothing more than basic tools, mental toughness and brute strength, until only one is crowned the king -- or queen -- of the jungle.

The next generation of "American Ninja Warrior" begins, as some of the show's biggest fans now get an opportunity to compete for the chance to be named American Ninja Warrior junior champion. Over the course of 20 weeks, 192 young competitors travel to Los Angeles from all over the country to square off in three separate age group brackets (9 and 10, 11 and 12, 13 and 14) until only one is left standing in each bracket. "American Ninja Warrior" co-hosts Matt Iseman and Akbar Gbajabiamila return to provide play-by-play commentary, along with a new co-host, gold-winning Olympic gymnast Laurie Hernandez. Joining them will be all-star ninjas, including Drew Drechsel, Meagan Martin, Najee Richardson, Barclay Stockett, Kevin Bull, and Natalie Duran, who will act as mentors for all of the junior ninjas.

A seasoned adventurer and survivalist deliberately "strands" himself in remote locales and makes his way back to civilization to provide in-depth advice for travelers who may find themselves lost on what was expected to be a routine hike or other trip.

Adventurer Ed Stafford has walked the length of the Amazon River -- he is the first person to accomplish that -- so perhaps being stranded on a desert island near Fiji without clothes, food, water and tools and attempting to survive for 60 days isn't that daunting. The only possessions he does have are cameras, and so viewers are provided a fly-on-the-wall perspective of Ed's attempts to find food, make fire, process water to drink, and build a shelter -- among many other tasks that will help him stay alive.

Discovery Channel takes the ubiquitous survival show theme to the next level by stripping it to its bare essentials. In "Naked and Afraid," complete strangers -- usually a man and a woman -- meet in a very unique way: They're stranded in a dangerous, desolate location, without food or water, and they're completely naked. Each episode follows the adventurers as they attempt to survive on their own with nothing but a personal item and the knowledge that the only prize is their pride and sense of accomplishment. Because there is no other choice, competitors quickly get to know one another -- and their surroundings -- and hope that their instincts, survival skills and intestinal fortitude serve them well.

These repackaged episodes -- "uncensored," if you will -- of "Naked and Afraid" include new information and footage not shown in original airings of Discovery Channel's popular survival show. Complete strangers -- usually a man and a woman -- meet in a very unique way: They're stranded in a dangerous, desolate location, without food or water, and they're completely naked. Each episode follows the adventurers as they attempt to survive on their own with nothing but a personal item and the knowledge that the only prize is their pride and sense of accomplishment. Because there is no other choice, competitors quickly get to know one another -- and their surroundings -- and hope that their instincts, survival skills and intestinal fortitude serve them well.