The development of biofuels is being questioned by researchers and environmentalists alike.
Fuels—their increasing use, diminishing supply in some areas, and their byproducts which are being attributed to global warming, have become the determining factors in the future of humans’ role on this planet. And petroleum, with its high energy output and its 41% dominant share of the U.S.’s energy portfolio, has become the current center of attention in this country.
Petroleum is not the self-contained resource that it once was to the American consumer—to meet current U.S. demand, more than 65% of the petroleum we use is imported, accounting for the largest significant share of the negative balance of trade we have. And then there’s the pollution, with petroleum accounting for the largest share of the increasing CO2 emissions which most scientists attribute to global warming.
Due to the graphs in this article a PDF has been made available for download.
