Associated Press: California and federal public health officials say that valley fever, a potentially lethal but often misdiagnosed disease infecting more and more people across the nation, has been on the rise as a warming climate and drought have kicked up the dust that spreads it. The fever has hit California's agricultural heartland particularly hard in recent years, with the incidence dramatically increasing in 2010 and 2011. The disease -- which is prevalent in arid regions of the United States, Mexico, Central...