Which country is leading the clean energy race? What retailer has the most solar panels on its rooftops? In honor of Earth Day, we're quizzing listeners on all things environmental. Test your knowledge of solar power, carbon and climate change by playing Worldview's Earth Day quiz. Join host Jerome McDonnell, Lisa Albrecht of Solar Service Inc., bio-diesel enthusiast Kitty Kurth, and Howard Learner, executive director of the Environmental Law and Policy Center.
(Photo: Flickr/Royce Bair)