NEW YORK -- Few sane people want to visit a storm-tossed Bering Sea or Canada's Northwest Territories in January. Experiencing them from a comfortable chair in front of a flat-screen television, however, is all the rage.

Shows about adventure seekers in forbidding lands are among the hottest on cable television. "Deadliest Catch," about crab fishermen off the Alaska coast, is Discovery's most popular show, while "Ice Road Truckers" is setting ratings records for The History Channel.

They have the romanticism of the wild frontier in common. Spectacular photography, at a time TV screens are becoming bigger and clearer, enhances the appeal.

Both "Deadliest Catch" and "Ice Road Truckers" were hunches that really paid off. Segments on the fishermen and big-rig drivers who race across frozen lakes were featured briefly on other shows, and executives decided to spin them off into series.

Viewership for the third season of "Deadliest Catch" grew by 20 percent and June's season finale was seen by nearly four million people -- big numbers for basic cable.

For a couple of weeks of backbreaking work on lurching, ice-slicked ship decks a fishermen can earn a year's wages. Or he could die. Nine have drowned in the Bering Sea since Discovery began filming the series, although none on boats where the network was filming.

"It's touched something rather big and mythic in society today," said Jane Root, Discovery's executive vice president and general manager. "The idea of those kind of rewards and danger existing in society is fascinating to people."

The stars of "Ice Road Truckers" face a different kind of danger. They need to deliver massive loads of equipment to busy diamond mines up north. And the work needs to be done in the dead of winter, where frozen lakes offer the most direct routes.

They can feel the ice crack and groan as they drive their big rigs over the lakes. If calculations about ice thickness are wrong, the trucks would plunge into the water, which would then freeze over faster than any rescue could be attempted. An idle truck that has broken down puts even more pressure on the ice.

Producers are blessed with indelible characters -- the old salts, cocky risk-takers, scared rookies.

"I find real people much more fascinating than the ones you could make up in Hollywood," said Nancy Dubuc, executive vice president and general manager of The History Channel. "Everyone has someone you either love or love to hate, and that's what you look for."

The 3.4 million people who tuned in to June's series premiere was the biggest bow ever for an original program on The History Channel, according to Nielsen Media Research.

The network decided only in December to make the series, putting the producers in the same sort of race against time faced by the truckers. Producers had to scramble to set things up and get a crew to northern Canada for when the roads opened in January.

A reality series about daredevil truckers might seem a strange fit for The History Channel. Dubuc said it touches upon one of history's greatest themes -- exploration.

The truest sign of a burgeoning trend is the number of similar series in the works. The History Channel is planning "Tougher in Alaska," about the difficulty of some common jobs there. Discovery is excited about "Last Man Standing," with six people who compete in sports originated by remote tribes.