LA JOLLA, California, June 29 -- The University of California San Diego campus posted the following news: * * * Scientists Identify Houston Power Plant as Dominant Source of Cloud-Forming Aerosols * Research by atmospheric scientists at UC San Diego's Scripps Institution of Oceanography and colleagues pinpointed an individual coal-fired power plant in Houston, Texas, as the main source of particles most likely to encourage formation of clouds around the metropolitan area. A large portion o  more