How Do They Do It?

The secrets behind the color and taste of Ireland's most famous export are revealed.

Peanut farmers in Georgia harvest enough nuts to make 10 billion peanut butter sandwiches.

Mud from the bottom of prehistoric seas is used to fight fires, and workers service luxury liners.

Experts discuss the engineering behind a versatile construction machine. Then, the secret behind the flavor of a favorite sauce is revealed, and workers maintain the sky deck on top of one of the tallest skyscrapers in the world.

Workers pull tons of pure white marble from the heart of a mountain. Then, salt and peppers are turned into Louisiana's favorite hot sauce, and handcrafted umbrellas are made.

Divers harvest undersea creatures for the perfect bath accessory, and cabbies navigate busy cities.

Armored vehicles are built to transfer millions of dollars of cash, and experts make bagpipes.

Experts reveal how Scotch whisky gets its flavor and prepare for the next disaster in New Orleans.

The most advanced crash test lab in the world recreates real-life car crashes. Then, thousands of books are printed in a day, and the process behind making an ingredient that's in everything from cookies to motor oil is revealed.

Experts reveal how tires that can take the weight of a jet touchdown are made. Then, 21st-century technology is used to make the guns that shot up the Wild West, and the perfect playing surface that never needs mowing is created.

Experts discuss some of the methods used to make money difficult to counterfeit.

Workers turn fields of grass into mountains of sugar, and tailors create quality suits in hours.

Workers recycle old car batteries into new ones, and chocolate is extracted from fleshy fruits.

Workers maintain one of the world's most popular attractions, and cutting-edge snowboards are made.

Caffeine is removed from coffee, and old techniques are used to make a favorite fish dish.

Dogs are used to sniff out evidence of arson, and barrels that give flavor to wine are made.

Lawn mowers are made that cut grass and break speed records, and coconuts are used to filter water.

Workers travel down in one of America's largest mines to excavate an essential metal.

Cars are designed that can climb mountains and cross rivers, and handcrafted saddles are made.

Workers reveal how UPS delivers millions of packages around the world every day. Then, the world's leading match factory turns a single tree into thousands of matches.