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Is ethanol really more eco-friendly than gas?
auto.howstuffworks.com/fuel-efficiency/alternative-fuels/ethanol-facts.htm
Ethanol facts help sort out which is better, ethanol or gas? Learn about ethanol facts, and find out if ethanol is more eco-friendly than gas.
How Geothermal Energy Works
science.howstuffworks.com/environmental/energy/geothermal-energy.htm
Geothermal energy is clean, abundant and renewable. Learn about geothermal energy, geothermal heat pumps and geothermal power plants.
Is there a way to keep floodwaters out of my house?
home.howstuffworks.com/home-improvement/home-diy/floodwaters-out-of-house.htm
Floodwaters can do significant damage to a home. Learn how to keep floodwaters out of the house in case of disaster.
How Electric Aircraft Work
science.howstuffworks.com/environmental/green-tech/sustainable/electric-aircraft.htm
Electric aircraft are explained in this article. Learn about electric aircraft.
Can you be a professional volunteer?
money.howstuffworks.com/economics/volunteer/information/professional-volunteer.htm
Being a professional volunteer may sound like a noble calling, but there are practical considerations. Learn whether you can be a professional volunteer.
Chicxulub Crater: Where the End of the Dinosaurs Began
science.howstuffworks.com/environmental/earth/geology/chicxulub-meteor.htm
The Chicxulub meteor impact may have killed off the dinosaurs. Would they have lived if the meteor missed? Learn more about the Chicxulub meteor.
How Do Water Softeners Work?
home.howstuffworks.com/question99.htm
A water softener uses sodium to help replace calcium and magnesium ions. Learn about about water softeners and how water softeners treat your water.
Why Do We Decorate With Holly at Christmas?
people.howstuffworks.com/culture-traditions/holidays-christmas/holly.htm
Holly adorns houses all over the world during the holiday season, but why do we decorate with it? Find out why its crimson berries are so closely associated with the holidays.
Why is Mesopotamia called the cradle of civilization?
history.howstuffworks.com/history-vs-myth/mesopotamia-cradle-of-civilization.htm
Mesopotamia was a region in the Middle East from which all of civilization developed. Learn about Mesopotamia and the birth of ancient civilization.
How the iQ Car Works
auto.howstuffworks.com/iq-car.htm
The iQ Car is a new four-seat passenger concept vehicle that was designed by Toyota. Find out what the iQ Car is and learn about iQ Car features.