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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On a snowy night in 1965, Hyattsville, Maryland's DeMatha Catholic High School defeated Lew Alcindor's Power Memorial Academy in what many call the greatest high school hoops game ever played.Learn more →