At just 6, Ruby Bridges braved angry crowds to attend an all-white school—becoming the first Black student to integrate in Louisiana.

The battle to tame the frontier isn't new. Look back at the pioneers of exploration in the Arctic.

All roads need repairs from time to time, but just how do you repair one made of ice?

The cast and crew discuss ice road trucking—hauling loads on slippery, dangerous ice to remote diamond mines.

Ted is out of commission after eating rotten fish, and Jim has to pick up the slack to keep their camp going.

After sustaining a back injury, Shannon struggles with the decision of whether or not to press the extraction button.

A starving Sam checks his numerous traps, hoping for some sustenance in this clip from Season 5, Episode 3, "The Serpent."

As Sam reinforces his roof for winter, he contemplates the necessity of taking a break due to intestinal issues.

After having struggled with it for days, Nicole realizes that her multiple sclerosis flare-up has gotten too extreme to ignore.

Lucas is thrilled to find a reliable source of protein, but he gets sick even after cooking the shellfish.

Living on a diet of mostly dandelions takes its toll on Larry in this clip from Season 5, Episode 5, "The Bowels of Hell."

Jim cuts his index finger while carving and the Baird boys worry about infection in this clip from Season 4, Episode 5, "Double or Nothing."

On Day 24, and with a stomach full of just pine bark, Jesse experiences excruciating abdominal pain.

A philosophical Dave comes to terms with the conflict over the lack of nutrients.

Unable to remove a hook from her hand herself, Carliegh heads to the hospital in this bonus scene from Season 5.

Carleigh's successful day of fishing takes a turn when she miscalculates and a hook embeds itself in her hand.