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Join us for another look at big machines. At NASA's Ames Research Center, we visit the world's biggest wind tunnel, part of the National Full-Scale Aerodynamics Complex, and one of the biggest and most complex flight simulators, NASA's Vertical Motion Simulator, or VMS . At the Joy Mining Machinery plant in Franklin, Pennsylvania, giant machine tools form, cut, and measure the enormous individual parts that make up a Continuous Miner, the biggest underground mining machine in the world. But big machines aren't limited to science and commerce. Ride with us on the biggest observation wheel in the world, the London Eye, which stands 443 feet high and provides a 360 degree unobstructed view of London . And we take a look at IMAX technology. The film, cameras, projectors, and theater screens are the largest in the world. Finally, we take a ride on every lawn tender's dream machine--the Claas Cougar, the world's biggest lawnmower.