Given the current state of energy use, which continues to grow exponentially in such countries as China and India, what measures can the United States and other Western countries take to produce more fuel-efficient and environmentally friendly fuels? What other sources of energy could be developed to solve the energy crisis? What can the individual do to alleviate this crisis? did you see any figures on how much discarded grease is actually available? My expectation is that it would be a very modest amount given our fuel use but that