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British scientists Richard Ambrose and Jonny Phillips return with a new series of this fun-but-informative show that explains...

The evolution of the machine gun from its use in WWI to the GAU-8 Avenger, one of the deadliest machine guns in the world.

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.

Watch as a selection of history's most gruesome projectile weapons are tested for their accuracy and deadliness.

Introducing the bone-crunching, flesh-tearing series that takes an alternative look at ancient weaponry.

Now it’s time for Dick and Jem to proudly reveal their new thoroughbred delivery vehicle to the expectant new owners.

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

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...

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...

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

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?