As I understand it that was when the earth Cycle around the sun goes elliptic or severe oval shape. course the further away from the sun the colder the earth gets. I don't know how they are going to stop that by taxing?
Bio-diesel not bad fuel IMO, Don't see that black smoke from buses, tractors, or 18 wheeler's anymore. I don't understand why propane hasn't taken off. Burns clean and don't dirty up internals of the engine like gasoline. Supposedly we has the largest natural gas deposits in the world?
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