A freak heat wave hits the MGM camp, opening deadly cracks in the ice road just as they are about to move their rig to the second well; Nabors' rig is finally drilling steadily when they hit a pocket of tough chert three kilometres down.

RATED 14+. On August 2, 2005, Air France flight 358 bursts into flames when it skids off the runway in Toronto during a raging thunderstorm; more than 300 passengers and crew have only seconds to escape the burning plane.

Alaska is one of the most extreme places on Earth and for the MythBusters, it provides an ideal habitat to test some Alaskan anecdotes.

Unassuming Canadians enter the "Cash Cab" as simple passengers taking a normal taxi ride, only to be shocked when they discover that they're instant contestants on Discovery Channel's innovative science-themed game show; host Adam Growe.

Featured: grinding wheels; compost; window blinds; milk.