An over-crowded South Korean city needs a link to a nearby town.
Divers test conditions for power supplies and construction underwater.
Building the highway underwater requires extreme precision.
Welcome to the world’s first spaceport where runways take you to space.
Once built, it’ll be the deepest, immersed highway on earth.
A small town in New Mexico is the birthplace of American space flying.
In the desert conditions are ideal for flying, not constructing a runway.
Water for plumbing and safety is needed for the spaceport.
The unique design of the hanger rooftop creates a difficult challenge for builders.
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