Gore challenges US to produce all electricity cleanly within 10 years

Former Vice President Al Gore is challenging the US to produce every kilowatt of electricity through wind, sun and other Earth-friendly energy sources within 10 years, an audacious goal he hopes the next president will embrace. The Nobel laureate said fellow Democrat Barack Obama and Republican rival John McCain are "way ahead" of most politicians in the fight against global climate change. Rising fuel costs, climate change and the national security threats posed by US dependence on foreign oil are conspiring to create "a new political environment" that Gore said will sustain bold and expensive steps to wean the nation off fossil fuels. "I have never seen an opportunity for the country like the one that's emerging now," Gore told The Associated Press in an interview previewing a speech on global warming he was to deliver Thursday in Washington.