Team Dominator is on the trail of a monster tornado; Team TWISTEX has one last chance to deploy their probe into the tornado's path.

Team Dominator risks it all to warn people who are in the path of a violent storm; a gunshy Sean Casey tries the patience of the TIV team.

A tornado outbreak hits team Dominator close to home; the TIV team follows its navigator's prediction; tensions escalate on the TWISTEX team.

Team Dominator takes a day off; Team TIV scores a victory; tensions continue to rise in Team Twistex.

The teams all pitch in to help the recovery effort following a tragic tornado outbreak in Alabama and Mississippi.

A nighttime chase puts the Dominator team on a collision course with a tornado they can't see; TWISTEX battles mechanical issues.

The teams will encounter the most-violent tornado season in more than 50 years; the year's first chase is a storm headed toward downtown St. Louis.

All three teams are on the front lines when hundreds of twisters ravage Mississippi and Alabama.

Storm and chasers collide in Minnesota for a final showdown.

Reeds cannons are locked and loaded, but multiple tornadoes prove a hard target for an itchy trigger finger.

South Dakota's storm season leaves the team with no time for drama.

The team struggles with the death of a teammate; Reed arms the Dominator with probe cannons; Tim smokes out a South Dakota monster.

Sean gives the reigns to his meteorologist-navigator, who leads them to their best tornado intercept yet; the team loses one of their own.

Reed pursues TV weather woman Ginger Zee; a long-time chaser calls it quits.

The deadliest tornado of the season tears across Mississippi, destroying homes and changing Reed, Joel and Chris' lives forever.

The roof is blown off the new Dominator; Sean mixes up his crew and unleashes tension in the path of a west Texas twister.

Mother Nature shows who really dominates Tornado Alley in the last chase of the season in Nebraska.

Sean Casey's meteorologists finally put him in a position for the shot of a lifetime.

Reed pushes too close to a tornado and finds no place to hide.

Read, Sean and Tim take on the strongest tornado conditions of the season.

Reed's new radar propels him to the rank of an extreme storm scientist.

So exactly how hard is it to find a needle in a haystack, anyway? And can water dripping on your forehead really drive you nuts? Those are the kinds of questions, myths and urban legends that are put to the test in this humorous series that seeks to find out which myths are true and which are not.

Before complaining about the market price of Alaska king crab, check out this gripping documentary series, revealing the mortal perils and intense discomfort that fishing crews face on the Bering Sea to catch the delicacy. Those perils include 40-foot waves, 700-pound crab pots that can easily crush a careless crewman, and freezing temperatures around the clock.

Storm chasers Jeff Piotrowski and Jim Edds report through the two most powerful hurricanes to ever hit the United States.

David Attenborough journeys across the polar regions of our planet.

The relationship between history, alcohol, taverns and American culture throughout the ages.

Tradition collides with transformation in McCarthy, Alaska. The isolated town -- once considered to be the state's version of "Sin City" -- flourished during the Gold Rush but is now home to roughly 40 people, a mix of mavericks, risk takers and rabble rousers willing to brave extreme conditions to live free. While some believe in continuing the town's frontier way of life, others feel the future of McCarthy depends on dragging it into the modern age. Long-standing resident Jeremy Keller fights to protect its roots, while Neil Darish has purchased multiple properties in town and plans to restore its vibrancy. "Edge of Alaska" tells the story of a hinterland at a crossroads.

Back to the beautiful state of Alaska for another reality-documentary series, this one set in the Arctic National Wildlife Refuge, a protected area home to thousands of native animals... and a handful of people. In 1980, the U.S. government banned human occupation in the refuge, and only residents in seven permitted cabins are allowed to remain. The series depicts the daily rituals of four families living in isolation and contending with bitter weather, frustrating setbacks, and aggressive wildlife in an unspoiled and unforgiving wilderness. The nonconformists include Heimo Korth, the "godfather of the final frontier," and wife Edna; Bob Harte, who has spent 40 years living by his own rules; and young couple Bob and Ashley Selden, who admit that they've survived by trial and error, learning day by day the harsh reality of frontier living.

Street racing in the U.S. is the subject of this docu-reality series, which purportedly provides an inside look into the action both on the road and behind the scenes. In Oklahoma City, for example, racers boast having the fastest street cars in the country, and the racing, they say, comes first -- before family, before friends and before work. From a 1969 Chevy Nova to a race-ready farm truck, the vehicles -- and their drivers -- come in all shapes and sizes and have one thing in common: the need for speed.

Personal stories of those caught up in sometimes deadly natural catastrophes, accompanied by camera footage showing meteorological phenomena, including hurricanes, earthquakes, monsoons and more.