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"The inventor may have died 80 years ago, but he refuses to fade away. From Steve Jobs comparisons and light-bulb politics to the return of his direct current for renewable energy, Edison's legacy is still unfolding."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/research-innovations/blogs/thomas-edison-celebrates-a-big-birthday>