Edwards advocates governmental subsidies for sustainable, renewable energy source development and weaning us away from dependence on fossil fuels.    He is one candidate not afraid to acknowledge that tax increases in some areas (such as the very wealthy) will be necessary to fund many programs for the public good.
(Meanwhile, the Bush administration and the Republican-dominated Congress for years had been not only cutting back on investment in non-polluting, renewable energy sources and conservation measures (e.g., energy-efficient equipment, insulation) but they had been actively promoting the purchase of gas-guzzling "light trucks" via huge tax credits.)