***This episode is a duplicate of S09E02, which is the correct episode number on IMDB and TVDB*** Chinese authorities attempt a huge infrastructure project as they try to move vast amounts of water from the wet south of the country to the dry north.

The world's largest aircraft combines the latest in technology and engineering to dwarf everything else in the skies. This marvel can stay airborne for five days and land anywhere in world, whether on land or at sea.

Go inside the ambitious engineering project that remade the famous Panama Canal. Billions of dollars were spent to move millions of cubic tons of earth, and ultimately, the canal will be able to accommodate the biggest ships in the world.

Go inside a state-of-the-art research base located in Antarctica, the coldest continent on Earth. Halley VI is built atop giant skis on a floating ice shelf, and this innovative design helps scientists brave the dangers of this extreme environment.

The International Space Station is the most expensive engineering project ever attempted, and the result is a masterpiece of modern ingenuity. This incredible vessel pushes the boundaries of space exploration and brings us closer to galactic colonization.

Kingda Ka is the tallest roller coaster in the world and fastest in the U.S., redefining the design of all thrill rides. This engineering colossus is one of the most innovative on the planet and features the fastest drop ride ever built.

The Falkirk wheel is the first and only rotating boat lift, capable of moving 600 tonnes of boat and water over a 25-metre height difference in just minutes.

A brand-new Mars rover might discover extraterrestrial life.

The Queensferry Crossing in Scotland marks a new age of superstructure construction.

The Kansai International Airport in Osaka Bay, Japan, is built on the largest man-made island in the world. Discover how engineers built an artificial island on top of clay seabed to make the most daring engineering project of modern times a success.

Uncover what it took to build one of the most ambitious rail projects in history, London's Crossrail. This staggering feat will span over 73 miles and transport 200 million people a year around one of the world's largest and busiest cities.

Discover what it took to build the world's tallest freestanding tower, the Tokyo Skytree. This record-breaking marvel faces some of the most deadly disasters on the planet, and must brave earthquakes and extremely high winds.

Test pilots and engineers embark on the first flight of the largest airplane ever built: the Stratolaunch, a one-of-a-kind aircraft designed to transport rockets, spacecraft and experimental hypersonic planes into the stratosphere.

Experts reveal the engineering behind the largest firefighting aircraft.

Find out what it took to build the largest ship in the world, the Pioneering Spirit. This 900,000-ton behemoth can install oil pipelines in the world's deepest waters and features state-of-the art thrusters and mammoth lifting beams.

The F-35 is the most advanced fighter jet on the planet. Special access into the most expensive military program ever reveals how engineers use cutting-edge tech to outfit this 1,200 mile-per-hour aircraft with a state-of-the-art stealth system.

The world's highest bridge, the Duge Bridge or Beipanjiang Bridge, impossibly spans an 1,800-foot chasm known as the Crack in the Earth, and to build this engineering marvel, experts use cutting-edge construction technology that can conquer the deadly cliffs of this rugged environment.

An abandoned power station is undergoing a cutting-edge reinvention.

The deepest-diving submarine is a monumental feat of engineering.

The US Navy is the largest sea force on the planet and their new, ground-breaking Littoral Combat Ships are the fastest combat ships in its fleet. Built for speed, these innovative warships can travel at over 40 knots per hour in shallow water.

A team of engineers are overhauling London's underground infrastructure to build a world-class sewer system. Using cutting-edge tech and the latest construction methods, they work to transform a centuries-old network into a modern-day masterpiece.

Deadly avalanches and catastrophic flooding are ever-present threats at one of the world's busiest ski resorts, but new technology and cutting-edge construction methods help engineers conquer the elements to keep this mountain-top getaway safe.

The world's largest crane vessel pushes the limits of modern engineering.

Experts reveal the engineering behind the Singapore National Stadium.

The Rion Antirion Bridge is an engineering colossus, spanning almost two miles. Discover how engineers conquered deep water and hurricane force winds to build a structure that could stand strong in one of the most active earthquake zones on our planet.