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How Freezers Work
home.howstuffworks.com/freezer.htm
Many freezers have features to prevent frost and digitally monitor temperatures, but the technology has been evolving for years. Learn about freezers.
How Hot Air Balloons Work
science.howstuffworks.com/transport/flight/modern/hot-air-balloon.htm
Hot air balloons are about as simple as flying can get - no engine, no moving parts really, and very little the pilot can do to control the vehicle. Find out what it's like to fly a hot air balloon!
How Auto-Versed Are You?
play.howstuffworks.com/quiz/how-autoversed-are-you
Do you know enough about automobiles to earn your Auto-Versity degree? This is the quiz that will demonstrate whether or not you have an understanding about cars, trucks, companies and pop culture that spans the entire subject!
How Crumple Zones Work
auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/crumple-zone.htm
Crumple zones are areas of a vehicle that are designed to deform and crumple in a collision. Read this article to find out how crumple zones work.
10 Possible Solutions to Air Pollution
science.howstuffworks.com/environmental/green-science/10-transportation-pollution-solutions.htm
Not only do cars produce a large portion of the world's pollution, but airplanes, boats, trucks, trains and buses also contribute to pollution. Is there one magic solution to pollution?
How Welding Works
science.howstuffworks.com/welding.htm
Welding is what makes bridges, skyscrapers and automobiles possible. Learn about the science behind welding.
When Is the Earth Going to End?
science.howstuffworks.com/environmental/earth/geology/earth-500-years.htm
The end of Earth will likely come about because of the sun in our solar system. This much you might already know, but we actually have an approximate date.
Can You Name These Ugly Cars From the '70s?
play.howstuffworks.com/quiz/can-name-these-ugly-cars-from-70s
Back in the 1970s, there were a lot of iconic cars, and a lot of them were downright hideous. Test your knowledge to see how many you can name.
How EPA Fuel-Economy Testing Works
auto.howstuffworks.com/fuel-efficiency/fuel-economy/28004-epa-fuel-economy-explained.htm
Why do the EPA's fuel economy numbers almost always seem to be off-base? Learn how the EPA tests new cars and trucks to gauge their fuel economy.
How does groundwater level affect your development plans?
home.howstuffworks.com/real-estate/buying-home/how-does-ground-water-level-affect-development.htm
Most of the water we drink and use is groundwater coming from rain or snow that has collected in the ground. The groundwater level on your land can impact the type of house, complex or well you're planning to build. We'll show you how.