In today world when there is a shortage of energy and greater danger to the environment from hydrocarbons, there is a company named Sierra Nevada Brewing Co. that has found a new way to make fuel. They have developed a procedure to make high quality ethanol fuel from the leftover beer yeast at its brewery. This is by any doubt a great method to make excellent use of organic waste. It is not only doing good to the environment but at the same time it is cheep, $1 per gallon, depending upon the ...