I think the climate scientist have underestimated global warming. Its happening a bit quicker than expected.  We have to stop using so much oil. It's all about consumerism, big trucks, bigger ATVs, 60' RV's towing SUVs.big snow powerful, sleds, big planes, big houses, big families.  Those who want such things should pay a carbon tax for their pleasures.  Meanwhile the rest of will continues to save oil in any way possible so has to leave our children some optimism about their children's future.