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Top 10 Advantages of Biofuels
auto.howstuffworks.com/fuel-efficiency/biofuels/10-advantages-of-biofuels.htm
While they're definitely not perfect, biofuels have many advantages over other types of fuels. Read about 10 advantages of biofuels at HowStuffWorks.
Why do some foods give you gas?
health.howstuffworks.com/human-body/systems/digestive/why-do-some-foods-give-you-gas.htm
Some foods will give you more gas than others (we're looking at you beans). Learn why some foods are more gas-inducing at HowStuffWorks.
10 Amazing Green Cities
science.howstuffworks.com/environmental/green-science/five-amazing-green-cities.htm
Sure, the Emerald City looked green, but you won't need green-tinted glasses to see how environmentally friendly the cities on this list are. What makes a city amazingly green?
How tall can a tree grow?
science.howstuffworks.com/life/botany/tree-grow.htm
Can a tree grow and grow? Or can a tree grow only to the point that water transport limits it? Learn more about tree growth and the tallest trees.
The General Science Quiz
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You spent a lot of time sitting in science classes -- But do you remember any of what you learned, or did you forget it right after the test? Take this quiz to prove your general science IQ!
Why Evergreen Trees Don't Shed Their Needle-like Leaves
home.howstuffworks.com/evergreen-trees-dont-shed.htm
Lots of trees are losing their leaves this time of the year. But evergreens keep theirs year-round. What gives?
How Ocean Currents Work
science.howstuffworks.com/environmental/earth/oceanography/ocean-current.htm
Ocean currents may be driven by tides, winds or differences in density. Learn how ocean currents affect marine transportation and nutrient cycling.
Earth: A Primer on the Third Rock From the Sun
science.howstuffworks.com/earth.htm
Earth is an enormous and extremely complex planet. Learn about the inner workings of the planet Earth and find out what forces are constantly at work on Earth.
10 Fascinating Facts About Flatus
health.howstuffworks.com/human-body/systems/digestive/10-facts-about-flatus.htm
Flatulence is funny, but there's actually some interesting stuff going on in your body to cause it. Learn some facts about flatus at HowStuffWorks.
How Long Do Catalytic Converters Last?
auto.howstuffworks.com/under-the-hood/car-part-longevity/catalytic-converter-last.htm
How long does a catalytic converter last? Visit HowStuffWorks to learn how long a catalytic converter lasts.