Synthetic fuels are one just one alternative to oil. Some synfuels are better for the environment, some are worse. Some are made from rocks found deep under the earth, and some are made from the trash in your local landfill. See what you know about the various types of synfuels in our ultimate synthetic fuels quiz.
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 »