In the past 50 years, the world's energy use has doubled. In the next 50 years, it will double again. Can we keep up with demand - or will we plunge into darkness?

On this episode: building a nuclear-powered icebreaker in Russia; laying the world's first trans-arctic cable in Alaska; constructing a modern airport on Baffin Island; building a permanent highway in middle of arctic winter.

Toppling giants of concrete and steel is dangerous and deadly. In demolition, one mistake can cost you your life. Witness a casino imploding as well as the dismantling of chemical weapons and tripping a silo.

New technology is allowing us to build underground structures that far surpass any building on earth. South Dakota is building a mile deep structure, inside an abandoned gold mine, to study the universe.

America has a history of building the impossible. Across the nation, a new generation of impressive projects is underway. On this episode: New Tappan Zee Bridge; Los Angeles Subway; New Orleans pump station; Mount Rushmore preservation.

As humans push even further into the world's most extreme environments, the question is: how far can we go? A new breed of tools allows man to face deadly forces once thought impossible.

Around the world, a new class of superstorms is overwhelming our coasts. If nothing is done, great cities like New York, Venice, and Tokyo will simply disappear. Engineers are fighting back, raising some of the biggest sea defenses in the world.

Around the world, one-of-a-kind structures are being built that tackle unique challenges. Projects featured include the largest movable structure in human history and a new stadium featuring a huge Oculus based on the Pantheon in Rome.