Geologist Richard Alley examines countries that are moving toward renewable energy sources, such as Spain, where solar power is becoming the norm; and Brazil, where cars are no longer dependent on gasoline. Also: the cost of and time frame for transitioning to a cleaner energy system are discussed.
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Explore the gamut of great burgers in Greater Washington, from greasy to gourmet. This documentary visits over a dozen burger joints in the area, showcasing classic burgers to exotic and quirky updates on this favorite All-American food.Watch now →