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How Carbon Tax Works
science.howstuffworks.com/environmental/green-science/carbon-tax.htm
A carbon tax is one of two market-based options that focus on lowering harmful emissions. Learn about the carbon tax and how a carbon tax can lower emissions.
How Zero-turn Mowers Work
home.howstuffworks.com/zero-turn-mower.htm
If your lawn is on the small side, a zero-turn mower might not be worth the investment. Learn all about how the zero-turn mower works.
Can You Guess the 2020 Price of These Midsized Cars?
play.howstuffworks.com/quiz/can-you-guess-the-2020-price-of-these-midsized-cars
Don't feel comfortable in a subcompact car but don't want an unwieldy full-sized one, either? You need yourself a midsize! Whether it's a Toyota Camry, an Audi A6, a Buick Regal Sportback or something else, let's see if you can pick their 2020 price in this quiz!
10 Most Terrifying Vehicle Manufacturing Defects
auto.howstuffworks.com/under-the-hood/auto-manufacturing/10-vehicle-manufacturing-defects.htm
Each year, auto manufacturers issue about 500 recalls. Learn more about vehicle manufacturing defects at HowStuffWorks.
Can You Guess if This Historical Story Is Fact or Fiction?
play.howstuffworks.com/quiz/can-you-guess-if-this-historical-story-is-fact-or-fiction
Is it for real or a fraud? Dive into history with these popular stories and myths. Do you know which is a contender and which is a pretender? Test your recall with this "fact vs. fiction" quiz!
Do You Know a Ford vs. a Chevy When You See One?
play.howstuffworks.com/quiz/do-you-know-a-ford-vs-a-chevy-when-you-see-one
Two of America's Big 3 are up against each other in this car-identification quiz! Will you be able to tell the Fords apart from the Chevys? It's not so easy!
Have we reached peak oil?
science.howstuffworks.com/environmental/green-science/peak-oil.htm
Oil is a nonrenewable resource. Have we found all the oil there is to find, or is there more out there somewhere? What's the best way to wean ourselves from our oil dependency?
Do It Yourself Vehicle Care: Spark Plugs vs. Fuel Economy, Part 1
auto.howstuffworks.com/under-the-hood/vehicle-maintenance/vehicle-care-spark-plugs.htm
DIY Vehicle Care: Spark plug vs. Fuel economy, Part I. In this aritcle learn the differences between spark plugs and fuel economy.
How to Prevent Soot Buildup in Your Car's Engine
auto.howstuffworks.com/how-to-prevent-soot-buildup-in-your-cars-engine.htm
How are engine friction and gas mileage related? Learn how to prevent soot buildup in your car's engine at HowStuffWorks.
Is the resale value of hybrid vehicles higher?
auto.howstuffworks.com/resale-value-of-hybrid-vehicles.htm
Is the resale value of hybrid vehicles higher? Visit HowStuffWorks to learn if the resale value of hybrid vehicles is higher than standard cars.