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10 Oldest Known Diseases
science.howstuffworks.com/life/cellular-microscopic/10-oldest-known-diseases.htm
You won't find some of history's biggest killers on this list, but you will find at least one disease that will make you want to bite something and another that might make you break out in "elevated pustules." Curious yet?
Why Do Beavers Build Dams?
animals.howstuffworks.com/mammals/beaver-dam.htm
Why do beavers build dams and what happens when they do? How would things change if no more beavers build dams?
How do automakers use independent research?
How do automakers use independent research? Visit HowStuffWorks to learn how automakers use independent research.
How the Tesla Roadster Works
auto.howstuffworks.com/tesla-roadster.htm
The Tesla Roadster is fast, fancy, handles like a dream, and goes like a rocket but it's virtually silent. Tesla's first production car is also the world's first high-performance electric car.
Rev Up: The Diesel Engine Quiz
play.howstuffworks.com/quiz/diesel-quiz
While diesel earned itself a bad reputation for spewing soot in the early days, improvements have made it much cleaner. Test your knowledge of all things diesel with this quiz.
How Air-Conditioned Seats Work
auto.howstuffworks.com/air-conditioned-seat.htm
Have you ever been in a car with air-conditioned seats? Read about air-conditioned seats at HowStuffWorks.
How Start-up Capital Works
money.howstuffworks.com/startup-capital.htm
When you're starting a business, capital is the long and short of it. You've got to spend money to make money, but before you can spend it you have to acquire it.
9 Largest Islands in the World
history.howstuffworks.com/world-history/largest-islands-in-world.htm
An island doesn't necessarily have to be small. You might be surprised by the size of some of these islands on our list. Here are the nine biggest ones.
What if we covered a city in a giant glass dome?
science.howstuffworks.com/engineering/structural/covered-city.htm
Domed cities would provide the same temperature year-round, no rain or snow, and the ability to go outside without worrying about a sunburn. Have they been tried before, and what about the people who enjoy their seasons?
How Opposed Piston Opposed Cylinder (OPOC) Engines Work
auto.howstuffworks.com/opposed-piston-opposed-cylinder-engine.htm
What are the advantages and disadvantages of opposed piston opposed cylinder engines? Read about OPOC engines at HowStuffWorks.