This film follows the race to generate vast power from thin air - the wind. One of the world's biggest windfarms is being built off the English coast where the harsh conditions pose great challenges for the team. Meanwhile, a Norwegian team is striving to build the first-ever floating windfarm.

The way we fly is about to change, driven by a new breed of aviators not afraid to think differently. From clean, green electric aircraft to autonomous sky taxis, could the days of the jet age be numbered?

One of the greatest technological challenges is the quest to produce the ultimate energy solution. Also called 'bottling a star', the goal of a power-producing fusion reactor has so far remained elusive.

The power of the ocean's tides is the last great untapped energy source on Earth. From sub-sea kites to floating platforms, teams of engineers are racing to perfect the technology to harness the vast flows of water.

The sun is the biggest source of energy in the solar system. Innovators are searching for new ways to capture more of the sun's power, and make it available through the night, everywhere.