The BEST episodes of How Do They Do It? season 4

Every episode of How Do They Do It? season 4, ranked from best to worst by thousands of votes from fans of the show. The best episodes of How Do They Do It? season 4!

How Do They Do It? Ever wondered how the stripes get into toothpaste or how contact lenses are made? How do goods get from one country to another and then into our supermarkets? What are car tires made from and exactly why are plasma TV screens flat? Eating, drinking, driving, flying. These all are activities that we carry out with barely a second thought. But have you ever wondered what exactly goes into your teabag and how it got there? How does an airport handle hundreds of thousands of items of luggage each day? And just how can a car’s airbag inflate so quickly? Every day – often without even realizing it – we come into contact with technology, be it in the bathroom, in the car or on the golf course. We take a look at how things work, and focus on some of the most amazing examples of everyday objects including the world’s fastest elevator and the most expensive chocolate money can buy.

Last Updated: 1/30/2024Network: DiscoveryStatus: Ended
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Rally Car; Letter; Titanium
star
8.33
3 votes

#1 - Rally Car; Letter; Titanium

Season 4 - Episode 2 - Aired 4/4/2007

Turning the family car into a rally car; titanium and letters.

Watch Now:Apple TV
Bullet Proof Vests; Robots; Formation Skydivers
star
7.00
31 votes

#2 - Bullet Proof Vests; Robots; Formation Skydivers

Season 4 - Episode 1 - Aired 4/4/2007

Watch Now:Apple TV
Forest Fires; Car Exhaust; Space Station
star
7.00
1 votes

#3 - Forest Fires; Car Exhaust; Space Station

Season 4 - Episode 3 - Aired 4/11/2007

Go beneath the surface to understand forest fires, car exhaust and the space station.

Watch Now:Apple TV
Spacesuit; Diesel Engines; Neon Signs
star
7.00
1 votes

#4 - Spacesuit; Diesel Engines; Neon Signs

Season 4 - Episode 4 - Aired 4/11/2007

How a spacesuit keeps an astronaut alive, the diesel engines that power the world's biggest ships, and the manufacturing processes behind the famous neon signs which cover Las Vegas

Watch Now:Apple TV
Nuclear Sub; Crash Test Dummies; Fruit and Vegetables
star
7.00
31 votes

#5 - Nuclear Sub; Crash Test Dummies; Fruit and Vegetables

Season 4 - Episode 5 - Aired 4/18/2007

Secrets behind nuclear submarines; crash-test dummies; growing fruits and vegetables.

Watch Now:Apple TV
Land Mines; Air Boats; Car Warehouse
star
7.00
1 votes

#6 - Land Mines; Air Boats; Car Warehouse

Season 4 - Episode 6 - Aired 4/18/2007

The world's largest land-mining machine; how airboats are built; warehouse for car parts.

Watch Now:Apple TV
Black Boxes; Steam Turbine; Racing Car
star
0.00
0 votes

#7 - Black Boxes; Steam Turbine; Racing Car

Season 4 - Episode 7 - Aired 4/25/2007

How black boxes survive an airplane crash; transporting giant steam turbines; making fireproof suits for race-car drivers.

Watch Now:Apple TV
Jet Engine; Weapons; Telescope
star
0.00
0 votes

#8 - Jet Engine; Weapons; Telescope

Season 4 - Episode 8 - Aired 4/25/2007

The design and manufacturing of large jet engines; non-lethal weapons that stun without killing; the world's largest telescope.

Watch Now:Apple TV