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Earth911
Sep 20, 2018, 5:00 am239 ptsOur most renewable energy source is the sun, burning brightly about 93 million miles from planet Earth. The sun’s rays provides 174 quadrillion watts of energy to the Earth’s surface every moment but we capture just a tiny fraction in photovoltaic cells and other solar technology. In this Earth911 quiz,…
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Leaf through planet Earths environmental headlines in one convenient place. Read, share and discover the latest on ecology, science and green living from the web's most popular sites.