Not only is global warming real, but the cost of preventing it would be small, and even beneficial.  So say many environmental leaders who believe we could easily meet world energy demand without relying on fossil fuels.  But now comes a major new report in Science magazine which ices this overheated claim.  According to the report, technologies simply do not exist at the present time which could meet the world’s growing energy consumption without emissions of carbon dioxide.  Indeed, with 85 percent of the world’s current 12 trillion watts now supplied by fossil fuels, the authors suggest that only revolutionary changes in energy production, distribution, and storage could ever hope to phase out our current energy sources.