Illegal pot grows found in Yosemite, forests. Officials crack down, citing 'catastrophic' poisons
http://www.sacbee.com/news/state/california/california-weed/article212123169.html A Fresno County Sheriff's Department investigator walks through a forest of marijuana plants growing on public lands in 2009 west of Shaver Lake. Law enforcement has launched a new attack on illegal marijuana farm in California's forests, saying Mexican cartels are using huge amounts of pesticides that threaten endanger species. Craig Kohlruss Fresno Bee file