SANTA BARBARA, Calif., Dec. 22 (UPI) -- Data from NASA satellites may soon allow scientists in the United States and elsewhere to predict when and where wildfires occur. While information from satellites and instruments recently let scientists determine more quickly the location of wildfires an
SAN DIEGO, Nov. 2 (UPI) -- U.S. physicists for the first time have observed the spontaneous production of coherence within "excitons." The University of California-San Diego researchers say excitons are the bound pairs of electrons and holes that enable semiconductors to function a
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