Changes

Biofuels are fuels produced from plant material such as soybean or corn oils rather than fossil fuel sources. Animal fats can also be used. The oils from are combined with alcohol and catalyzed to form ethyl or methyl esters. They are sold either neat, as 100% biodiesel, or blended with conventional diesel oil. Other forms of biofuels are biologically produced alcohols and biogases. <ref>http://www.mines.edu/Academic/econbus/ifp/glos-ener.html</ref>  

'''Biofuels''' are fuels produced from plant material such as soybean or corn oils rather than fossil fuel sources. Animal fats can also be used. The oils from are combined with alcohol and catalyzed to form ethyl or methyl esters. They are sold either neat, as 100% biodiesel, or blended with conventional diesel oil. Other forms of biofuels are biologically produced alcohols and biogases. <ref>http://www.mines.edu/Academic/econbus/ifp/glos-ener.html</ref>  

Increases in the price of fossil fuels, combined with fears of a shortage in the future, have spurred research into biofuels as a clean and renewable energy source. The [[US]], [[European]] and other governments have put measures in place encouraging the production of biofuels<ref>http://www.insidegreentech.com/node/803</ref>.

Increases in the price of fossil fuels, combined with fears of a shortage in the future, have spurred research into biofuels as a clean and renewable energy source. The [[US]], [[European]] and other governments have put measures in place encouraging the production of biofuels<ref>http://www.insidegreentech.com/node/803</ref>.