When gas prices rise, people's thoughts naturally jump to alternative fuel sources. Early adapters are already making the shift to hybrid cars, and eventually, we'll all be driving gasoline-free vehicles. Check out the articles in this roundup to learn all about the growing technology of alternative fuel.
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Many biofuels raise a gnawing question: Is it better to make a given grain, legume or other edible plant into fuel, or should we protect it as a source of food?
You know that your car's interior tends to get hot -- dangerously hot -- in the summer. A solar vehicle ventilator would help drivers cool off by using the sun's energy to blow hot air out of your car and draw cooler air inside.