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MAIN: SCIENCE REPORTSBODY AND BRAINEARTH AND ENVIRONMENTSPACETECHNOLOGYVIDEOARCHIVEFOR TEACHERS
Earth and Environment
    Power Grid
Photo of the Earth
Wind farm
Green Energy and the Power Grid
June 9, 2009
Report
The Los Angeles Department of Water and Power is aiming to use 35 percent renewable energy by 2020. But the city faces the same problem that other urban centers do: Most renewable energy sources are located far from the cities that need them.
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Web Only Video: Wind Farms in LA
    Future City
Students Envision "Cities of the Future"
April 22, 2009
Report
More than 30,000 students from 1,100 middle schools participated in a contest this year to design an efficient, livable "city of the future."
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College Students Exhibit Sustainable Design
Future city winners
   Polar Science
Polar Year Explores How Earth Systems Interact
April 10, 2009
In-depth Coverage
The poles help keep the planet cool and contain much of the Earth's fresh water locked up in ice sheets. Scientists are wrapping up a two-year intensive period of study of these remote regions involving more than 60 nations.
Polar Bear; file photo
RELATED INFORMATION
Slide Show: Scientists Explore the Arctic
    Video
Water pump in Bangladesh smokestacks
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    Climate Change
    Carbon Trading
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