Amateur inventors pitch their products to a panel of experts.
Examining construction projects of a grand scale, including buildings and mass-transit systems.
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A reality series showing how diverse feats are accomplished.
How mega buildings and cutting-edge ships, trains and planes were designed and built.
How various machines work.
Urban legends are investigated.
Purported UFO sightings by astronauts and questionable images captured by NASA's cameras are discussed.
A countdown of the top stunts and experiments found on the Web.