Proposes reducing carbon emissions by 80 percent by 2050 by using a market-based cap-and-trade system. Would invest $150 billion over 10 years in clean energy. Supports next generation biofuels. Proposes increasing fuel economy standards and would require that 25 percent of electricity consumed in the U.S. is derived from clean, sustainable energy sources by 2025. Would create a Global Energy Forum and re-engage with the United Nations Framework Convention on Climate Change.