7.2/1010 votes#1 - Underground World, Gunmakers
Season 7 Episode 1 - Aired 6/4/2010
Head underground into America's largest mine to find out how lead is extracted. And how do they manufacture and test made-to-measure shotguns?
Director: N/A
Writer: N/A
- 7.3/1010 votes
#2 - Diggers, Taste Of The Orient, Into The Void
Season 7 Episode 2 - Aired 6/10/2010
How do they operate the world's most versatile construction machines? Plus, how do they maintain the Willis Tower Skydeck in Chicago?
Director: N/A
Writer: N/A
- NaN/100 votes
#3 - Peanut Butter, Breaking Point
Season 7 Episode 3 - Aired 6/11/2010
How are peanuts harvested, roasted and transformed into peanut butter; and how are domestic appliances tested?
Director: N/A
Writer: N/A
- 7.3/109 votes
#4 - Smooth As Marble, Hot Stuff, Umbrellas
Season 7 Episode 4 - Aired 6/18/2010
How do they mine marble for Washington's monuments; how do they make Tabasco Sauce; and how do they produce storm proof umbrellas?
Director: N/A
Writer: N/A
- 7.3/1010 votes
#5 - Tales From The Black Stuff, Silk, In The Can
Season 7 Episode 5 - Aired 6/25/2010
How do they make Irish stout and how do they use silkworms to create gunpowder bags and clothes? Plus, how do they put soup into cans?
Director: N/A
Writer: N/A
- 6.7/1011 votes
#6 - Fire Extinguishers, Cruise Liner
Season 7 Episode 6 - Aired 7/2/2010
How are phosphates used to put out fires; and how are cruise liners fuelled up and stocked with supplies before a voyage?
Director: N/A
Writer: N/A
- 6.7/109 votes
#7 - Aircraft Tyres, Six Shooters, Fever Pitch
Season 7 Episode 7 - Aired 7/9/2010
How do they make aeroplane tyres; how do they fire the fastest guns in the west; and how do they make artificial turf for football pitches?
Director: N/A
Writer: N/A
- 7.0/108 votes
#8 - Soft As Sponge, The Knowledge
Season 7 Episode 8 - Aired 7/16/2010
In this episode, learn how they dive for sponges and how taxi drivers know their way to so many different destinations.
Director: N/A
Writer: N/A
- 7.2/108 votes
#9 - Money Movers, Catch Of The Day, Amazing Grace
Season 7 Episode 9 - Aired 7/23/2010
How do they transport cash securely; how do they land big game fish; and how do they produce bagpipes?
Director: N/A
Writer: N/A
- 6.4/1011 votes
#10 - Crash Testing, Books Etc, Margarine
Season 7 Episode 10 - Aired 7/30/2010
How do they design cars that will protect you in a crash; how do they print a bestseller; and how do they transform oil into margarine?
Director: N/A
Writer: N/A
- NaN/100 votes
#11 - Whisky Galore, Disaster Prevention
Season 7 Episode 11 - Aired 8/6/2010
How is water transformed into whisky; and how are they preparing for another natural disaster like Hurricane Katrina?
Director: N/A
Writer: N/A
- 7.0/108 votes
#12 - Sugar, Fish Farming
Season 7 Episode 12 - Aired 8/13/2010
How do they transform raw cane into sugar; how do they farm fish; and how do they create tailor made suits that are ready within the day?
Director: N/A
Writer: N/A
- 7.0/108 votes
#13 - Money, Shoe-In
Season 7 Episode 13 - Aired 8/20/2010
How are banknotes designed and printed; and how is leather hide transformed into pairs of shiny shoes?
Director: N/A
Writer: N/A
- 7.3/109 votes
#14 - Battery Power, Chocolate, Toothbrushes
Season 7 Episode 14 - Aired 8/27/2010
How do they make toothbrushes; how do they produce millions of car batteries; and how are cacao beans transformed into chocolate?
Director: N/A
Writer: N/A
- 7.0/108 votes
#15 - Eiffel Tower, Snowboards
Season 7 Episode 15 - Aired 9/3/2010
How do they carry out maintenance on the Eiffel Tower; and how do they design and build the ultimate snowboards?
Director: N/A
Writer: N/A
- 7.0/108 votes
#16 - Decaf Coffee, Smoked Fish, Water Jets
Season 7 Episode 16 - Aired 9/10/2010
How do they turn coffee beans into decaffeinated coffee; how do they smoke fish; and how do they use water to power ships?
Director: N/A
Writer: N/A
- 7.0/109 votes
#17 - Blaze Cops, Oaked
Season 7 Episode 17 - Aired 9/17/2010
How do investigators establish the cause of a fire; and why are oak barrels important in traditional French winemaking?
Director: N/A
Writer: N/A
- 7.1/1013 votes
#18 - Lawnmowers, Bread, Clean Water
Season 7 Episode 18 - Aired 9/24/2010
How do they build the world's fastest lawnmowers; how do they set the price of bread; and how do they use coconuts to clean water?
Director: N/A
Writer: N/A
- 7.2/109 votes
#19 - Matches, Chrome
Season 7 Episode 19 - Aired 10/1/2010
How do they produce millions of matches; and how do they buff and polish chrome for the perfect shine?
Director: N/A
Writer: N/A
- 7.3/1010 votes
#20 - Off-Roaders, Saddles, Cakes
Season 7 Episode 20 - Aired 10/8/2010
How do they build the best off-road cars; how can cowboys stay on a bucking bronco; and how do they transform flour into cakes?
Director: N/A
Writer: N/A
The Best Episodes of How Do They Do It? Season 7
Every episode of How Do They Do It? Season 7 ranked from best to worst. Discover the Best Episodes of How Do They Do It? Season 7!
An insider's look at the engineering and scientific miracles behind the things that form the modern world.
Genre:Documentary
Network:Discovery
Season 7 Ratings Summary
"Underground World, Gunmakers" is the best rated episode of "How Do They Do It?" season 7. It scored 7.2/10 based on 10 votes. Directed by N/A and written by N/A, it aired on 6/4/2010. This episode is rated 0.1 points higher than the second-best, "Diggers, Taste Of The Orient, Into The Void".