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What % Intelligent Are You?
play.howstuffworks.com/quiz/what--intelligent-are-you
You don't need to be a member of Mensa or the next Albert Einstein to take our intellectual quiz! Just show us how your mind works and how you perceive the world so we can determine how smart of a person you really are!
How many calories does running burn?
Scientists once assumed that running and walking used the same amount of energy -- that is, they burned the same number of calories. However, a group of Syracuse University researchers found that running actually burns more calories than walking. What factor had scientists overlooked in the past?
How Can Minus 40 Fahrenheit Equal Minus 40 Celsius?
science.howstuffworks.com/math-concepts/minus-40-equal.htm
There are two different scales of measuring temperature on Earth, but they merge at just one very cold number.
What's the Scariest Roller Coaster in the World? 10 Contenders
science.howstuffworks.com/engineering/structural/scariest-roller-coaster-in-the-world.htm
Some people scream their lungs out on roller coasters. Others hold their arms high and beg for more. Which camp would you fall into if you rode the scariest roller coaster in the world?
9 Castles in Europe Worthy of Their Icon Status
history.howstuffworks.com/european-history/castles-in-europe.htm
Dozens of castles in Europe dot the landscape, each with a story carved into stone, wood, and legend. These aren’t just ruins of the past; they’re full-blown time machines, and they sit proudly in cities, on hillsides, and by rivers waiting for curious visitors.
How Light Bulbs Work
home.howstuffworks.com/light-bulb.htm
The light bulb hasn't changed a whole lot in its 120 years -- the original design was just that good. Apparently, you can throw together a filament, a glass mount, an inert gas and a bit of electricity and change the world. Learn what happens when yo
What is the urban heat island effect?
science.howstuffworks.com/environmental/green-science/urban-heat-island.htm
Cities are often hotter than rural areas because of the urban heat island effect. Learn what an urban heat island is.
How Solar Battery Chargers Work
electronics.howstuffworks.com/gadgets/travel/solar-battery-chargers.htm
Solar battery chargers are popular automotive gadgets. Learn more about solar battery chargers at HowStuffWorks.
Are grease cars legal?
auto.howstuffworks.com/fuel-efficiency/vehicles/grease-car.htm
A grease car can save you a lot of money on fuel, but can it also cost you in fines from the government? Learn about grease car legality and the EPA.
How Drive-by-wire Technology Works
auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/drive-by-wire.htm
Drive-by-wire technology has been around for some time, but how long before you drive your car with a joystick? Read about drive-by-wire in this article.