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By Nicoletta Lanese - Staff Writer Live Science
By Rachael Rettner - Senior Writer LiveScience
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By Nicoletta Lanese - Staff Writer Live Science
By Nicoletta Lanese - Staff Writer Live Science
By Cari Nierenberg - Live Science Contributor
By Yasemin Saplakoglu - Staff Writer Live Science
By Rachael Rettner - Senior Writer Live Science