Climb inside an Abrams M1A2 tank before it goes off to war and trace the tank’s journey from WWI to modern-day war machine.

Track the flight of a Tomahawk cruise missile and examine every key stage of its journey - launch, flight and target.

Climate experts examine what effect each rise of 1ºC could have on the world.

Interview with eco-engineer Dick Strawbridge and inventor Jem Stansfield from Planet Mechanics

This time the Planet Mechanics are tackling one of the world’s biggest problems, traffic pollution.

The next morning, and the whole bike has to be stripped down to get to the heart of the problem.

Jem’s working on the mounts for the air tanks. They’re coated with carbon fibre, a material that can’t be welded. He has...

It’s not nearly as much as Jem wanted so he’s ordered the best air motors he can find, but these motors are normally used i...

Dick and Jem have come to this scrap heap to collect an old vehicle to recycle.

So they’re building a moped powered by fresh air. They’ll replace the petrol engine with an air motor and the gas tanks wit...

This time the Planet Mechanics are tackling a tricky challenge down on the farm. Can they tame this fuel-guzzling monster, by t...

A few weeks later, Dick and Jem are back and can’t wait to see how much the gas tank has risen.

To drive the press, they’re salvaging this scrap lawnmower and will convert its petrol engine to run on biogas.

Is there anything else on the farm they can use to fuel the grain dryer?