Name: Hearing Aids, Trains
Genre: Comedy
Duration: 25 min

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An investigation into the remote-controlled machines completing tasks too dangerous for human divers; handmade teddy bears; India's favorite cheese.

How Do They Do It?

Remotely Operated Vehicles

An investigation into a sensitive hearing aid developed by Swiss engineers; comfortable commuting; the art of shadow puppetry.

Hearing Aids, Trains

How basmati rice is turned into millions of microwaveable meals.

Basmati Rice, Mechanical Birds

An investigation into mining a million tons of fertilizer from beneath the sea; how to hand-print colorful clothes using batik; natural syrup.

Fertilizer, Maple Syrup

An investigation into how huge amounts of mushrooms are made in the world's mushroom capital each year; life saving gloves.

Mushrooms, Maps

An investigation into how all the features of an apartment are put into a motorhome; sugar and fine art; ballet shoes.

RVs, Chupa Chups

A look at the challenge of cleaning the windows of the Petronas Towers, the world's tallest twin towers; how jigsaw puzzle pieces are made to be unique; how Olympic field hockey sticks are crafted from fiberglass and kevlar.

Window Cleaners

Investigating how they make the amplifier used by rock legends, the famous Marshall amp; how they turn wet clay into frost-proof garden pots.

Guitar Amplifier, Clay Pots

Looking at how they harness the wind to power a racing yacht to Olympic gold; how they make a sword fit for an officer at the world's largest sword factory.

Sails, Ceremonial Swords

The power of the world's biggest engines are quadrupled with turbochargers; new roads are built from old plastic waste; one particular style of kite is the national symbol of Malaysia.

Turbochargers, Plastic Roads

How millions of real nests are collected to make bird's nest soup; aerospace technology makes rowers go faster; how Spanish flamenco castanets are created.

Bird's Nest Soup, Rowing Oars

How a tractor is built every three minutes in order to power Indian agriculture; bronze bells are cast to help Swiss farmers keep track of their cows; how streets are lit to make roads safer.

Tractors, Cowbells

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S16 E19 | Hearing Aids, Trains