Instead of relying on futuristic power sources, steampunk-style contraptions look to the past and get their juice from steam. Does steam have staying power as a source of energy?
The biofuel industry has become an economic lifeline for dozens of communities. Several studies suggest the industry could add more than 1 million jobs to the U.S. economy in the next two decades. Could one be in your backyard? See more »
Switching the world's energy consumption to biofuel makes good sense in some aspects, but the biofuels most likely to be produced on a large scale carry significant drawbacks. What are some of the economic disadvantages of biofuel? See more »
The debate over food crops grown for biofuels may not be quieting yet—not only is the practice said to feed fewer people than food crops grown for... food, but it also threatens wildlife habitats—but at least the variety of crops used is expanding beyond corn. Learn more about using sugarcane as biofuel. See more »
So you converted your car to run on biodiesel. You're ready to take your newly greened beauty on a road trip across the country on its virgin run. Learn more about stocking up on biodiesel, now hundreds of fueling stations across the US. See more »