05/06/2007
https://www.presidency.ucsb.edu...
"We also agree that developed countries, like my own, have a historic responsibility to take the lead."
"The necessary shared effort will not begin in earnest unless and until the United States leads the charge."
"President Obama called upon the Senate to demonstrate the same commitment, the same commitment that we saw in the House to build a clean energy foundation for a strong American economy."
"Clean energy is, to this decade and the next, what the Space Race was to the 1950s and 1960s."