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10 Innovations in Hydropower
science.howstuffworks.com/environmental/energy/10-hydropower-innovations.htm
People all over the world are working on turning this very ancient power source into an even more important modern one. And that means a lot more than dams.
How a Pneumatic Tube Works
electronics.howstuffworks.com/everyday-tech/pneumatic-tubes.htm
That tube you put your check or deposit slip in at the bank drive-up window is called a pneumatic tube. This was cutting edge 19th-century technology and is still in use today.
10 Ways to Avoid Overheating Your Truck
These 10 ways to prevent your truck from overheating will help you keep engine heat down. Read the top 10 ways to prevent your truck from overheating.
How Black Boxes Work
science.howstuffworks.com/transport/flight/modern/black-box.htm
Black boxes help investigators determine what happened in an airplane accident. What's inside a black box and how does it record flight data?
The Railroad Retirement Board
history.howstuffworks.com/american-history/railroad-retirement-board.htm
The Railroad Retirement Board was created in order to give railroad workers a separate pension. Learn about the Railroad Retirement Board.
How do you use an angular torque wrench?
home.howstuffworks.com/angular-torque-wrench.htm
Torque wrenches measure the torque force applied when fastening a bolt, but sometimes angle measurements are also necessary. Learn how to use an angular torque wrench in this article.
How to Clean a Porcelain Sink
You need to clean a porcelain sink, but you're not sure how to do it. Learn about how to clean a porcelain sink in this article.
How do lock pick guns work?
home.howstuffworks.com/home-improvement/household-safety/lock-pick-gun.htm
Lock pick guns work on the same principle as raking a lock by pushing up the pins. Learn how lock pick guns work in this article.
What's in an Army first aid kit?
health.howstuffworks.com/medicine/army-medicine/army-first-aid-kit.htm
What's in an Army first aid kit? Visit Discovery Fit & Health to learn what's in an Army first aid kit.
How Automotive Metal Cutting Works
auto.howstuffworks.com/under-the-hood/auto-manufacturing/automotive-metal-cutting.htm
Automotive metal cutting has to be an exact science. Visit HowStuffWorks to learn all about automotive metal cutting.