The U.S. Environmental Protection Agency defines greenhouse gases as those that trap heat in the atmosphere.
The pact signed by Energy Secretary Jennifer Granholm and Japan's minister of economy, trade and industry, Yasutoshi Nishimura, says that geothermal energy is recognized as a "renewable energy technology that the United States and Japan can work together to advance." "The prospects of offshore wind are enormous. The prospects of geothermal. We’re very excited about partnering with Japan on these kinds of issues," Granholm said in anThe agreement did not specify expected spending but said each side would bear the costs associated with their own activities.