An analysis of the mysterious "rods" suggests that they may be descendants of creatures from ancient times.

Geo Beach digs into what makes Alaska so tough.

The Gustafson crew hit a snag when shortening the skyline cable.

Tougher in Alaska makes tracks on Alaska's snowy roads and trails.

Tougher in Alaska takes a bite out of Alaskan delicacies such as kippered salmon, walrus and the beluga whale.

Tougher in Alaska warms up with a cup of java in Anchorage Alaska.

Famous Fat Dave faces-off against Eric "Badlands" Booker to find out what it takes to be a competitive hot dog eater.

John Stage, of Dinosaur Barbecue, gives us a taste of how he creates his mouth watering barbecue pork ribs.

Famous Fat Dave unlocks the mystery of mole poblano by joining Zarela Martinez, owner of the Mexican restaurant Zarela.

Famous Fat Dave spices up his fiesta with some tasty tacos.