This link has now been eradicated in the food chain. Many species who in turn feed off birds have had their populations diminished. By the year 2000 it is estimated that the US. will have burned 80 percent of its petroleum resources. Coal resources may last 100 years or longer, but have drawbacks in burning due to its high sulfur content which contributes to acid rain. Hemp is an excellent source of biomass for Methanol production.
Methanol is the most viable alternative clean fuel for autos.
Electric cars are very limited in utility, costly and merely exchange vehicle pollution for nuclear, coal or oil power plant emissions. This can replace coal as an energy source in some applications. Hemp charcoal contains no sulfur. Coal emissions are responsible for Acid rain, which now in New England registers between vinegar and lemon juice on the pH scale and has certainly bad effects on any life form trying to survive off it. The ecosystem of the entire eastern US has been significantly affected.