The need to secure alternative energy sources rages on. Here is a good summary of the leading candidates emerging.
An Animated Look at Wind Turbines Mental Floss Technology
How solar panels work.
solar forest charging station for electric vehicles
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Types of Renewable Energy. The United States currently relies heavily on coal, oil and natural gas for its energy. Fossil Fuels are nonrenewable, so once they're out, they're out.
French Company New Wind Designs Miniature Wind Turbine, In The Shape Of A Tree, Called ‘Wind Tree’