“At one time the United States was the world leader in renewable-energy production and technology,” writes science reporter Stephen Leahy, “but it has fallen behind countries like Germany, Norway, Spain and Britain.” In 2009, President Obama’s Recovery Act allocated approximately $3.5 billion to the Department of Energy’s program for research and development in renewable energy and energy conservation .
"Clean Energy." Environmental Science: In Context. Ed. Brenda Wilmoth Lerner and K. Lee Lerner. Vol. 1. Detroit: Gale, 2009. 118-121. In Context Series. Opposing Viewpoints in Context. Web. 20 Apr. 2015.