Corporate News Reports that 'Contrails are Changing the Climate'

 ________________________________________________________________, ________________________________________________________________, activity, aerial, atmospheric science division, cbc, corporate news reports, edward teller, environment canada, formation, geoengineering, global, global warming, hamilton, hamilton independent media centre, hamilton journalists, heavy aerosol spraying activity over hamilton area documented, ice ages, international seminar, ken caldeira, lawrence livermore national laboratory, passenger, planes, planetary emergencies, public, quotcontrailquot, radiation balance, s. patent, sky, sources, spraying, spraying operations, stratospheric welsbach seeding