Bear Grylls is a British adventurer who is the star and writer of a show called Born Survivor, otherwise known as Man vs. Wild in the U.S. What Bear does in his show is he goes to the worst, worst inhabitable and some of the most terrifying places on earth and shows people how to survive.
Bear Grylls Born Survivor
Just to let you know. Ultimate survival episode on Mount Kilauea, the ruck sack that Bear Grills wears changes from black to red when he uses his socks as gloves on the lava field, and then back to black when he starts to cross the big cracks formed by earthquakes.