Three skiers are stranded on a chairlift and forced to make life-or-death choices that prove more perilous than staying put and freezing to death

In Mount Holliston, snowboarders Dan Walker, his girlfriend Parker O Neil and his best friend Joe Lynch don t have enough money to buy cable car tickets. Parker bribes Jason, an employee of the skiing station, with one hundred dollars. When the system is nearing closure, they force Jason to let them have the last pass. However, Jason needs to resolve a problem and his colleague misunderstands his instructions and stops the cable car, and the trio of snowboarders gets stranded on the chairlift on the top of the mountain. When they see that the lights of the ski resort had been turned off, they need to make a choice: leave the chairlift or freeze to death.

At Mount Holliston, snowboarders Dan Walker, his girlfriend Parker O Neil and his best friend Joe Lynch don t have enough money to buy lift tickets. Parker bribes Jason, a lift-worker, with one hundred dollars. When the system is nearing closure, they force Jason to let them have one last pass. However, Jason needs to resolve a problem and his colleague misunderstands his instructions and stops the lift. The trio of skier and snowboarders gets stranded on the chairlift near the top of the mountain. When they see that the lights of the ski resort had been turned off, they need to make a choice: leave the chairlift or freeze to death.

At Mount Holliston, snowboarders Dan Walker, his girlfriend Parker O Neil and his best friend Joe Lynch don t have enough money to buy lift tickets. Parker bribes Jason, a lift-worker, with one hundred dollars. When the system is nearing closure, they force Jason to let them have one last pass. However, Jason needs to resolve a problem and his colleague misunderstands his instructions and stops the lift. The trio of skier and snowboarders gets stranded on the chairlift near the top of the mountain. When they see that the lights of the ski resort had been turned off, they need to make a choice: leave the chairlift or freeze to death.

Takes place in the days before Christmas near a little-known border crossing on the Mohawk reservation between New York State and Quebec. Here, the lure of fast money from smuggling presents a daily challenge to single moms who would otherwise be earning minimum wage. Two women - one white, one Mohawk, both single mothers faced with desperate circumstances - are drawn into the world of border smuggling across the frozen water of the St. Lawrence River. Ray and Lila - and a New York State Trooper as opponent in an evolving cat-and-mouse game.

At the North Pole, the sun returns after six months of darkness.

Each spring, massive sweet water thawing rapidly transforms the polar regions and the surrounding seas, where broken-off ice floats to. This is crucial in the life cycle of many species, sometimes extremely elaborate. Many colonies (re)unite to mate, hatch and/or start raising offspring, especially in temperate parts, such as South Georgia island.

After non-stop summer months, the polar regions have expanded maximally, abundant food turns even the bears sociable. However the shortening of days soon starts reversing the process as frost expands the ice again. So many seasonal migrations turn too, mainly leaving for warmer regions. A stunning exception are the giant emperor penguins, who arrive to mate, lay and raise their eggs in heroic defiance of the planet s harshest conditions.

David Attenborough reveals how scientists measure the changes in the polar regions and what they mean for the animals and people who live there, as well as for the whole planet.