Renewable energy, facts and information

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Solar, wind, hydroelectric, biomass, and geothermal power can provide energy without the planet-warming effects of fossil fuels.
There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world–and how we can use it to combat climate change. Select footage courtesy NASA
WATCH: Taller than the Statue of Liberty, these wind turbines journeyed across the sea.
What are solar cells, and how do they work? Find out more about solar power - and learn how this renewable resource harnesses the power of the sun into usable energy.
Worldwide biofuel production has increased, with the main source being corn-based ethanol.