The U.S. solar industry is split over the issue.
By Associated Press
The Solar Impulse-2 finished the most challenging leg of its around-the-world trip, which started in March 2015 in the United Arab Emirates, in an attempt to draw attention to clean-energy technology.
By Michael D. Regan
By PBS NewsHour
In March, 47 percent of Spain's electricity came from renewable sources.
By Carey Reed
By Daniel Costa-Roberts
Heavy rainfall in Costa Rica has caused a spike in hydroelectric production this year. Together with green energy from sources like geothermal, wind, solar and biomass, the power glut means the Central American country's energy utilities haven't needed to burn…
By Jenny Marder
The giant spot on the face of the sun has scientists scratching their heads. By the time it rotated into our view, it was already 80,000 miles wide, big enough to fit all of Jupiter, big enough to lay 10…
By Jim Kuhnhenn, Associated Press
SAN JOSE, Calif. -- President Barack Obama is showcasing Wal-Mart, often a target of labor groups and other Democratic constituencies, to promote advances in energy efficiency in his broader campaign to confront climate change. Obama on Friday was to announce…
video interview with Bill Ritter…
video, extended interview cuts…
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