Scientific American: It’s high noon, and the 112–degree summer heat – up from a decade ago – stalks Arizona’s Sonoran Desert. By late afternoon, dark clouds threaten, and monsoon winds beat the earth into a mass of swirling sand. Thick walls of surface soil blind drivers on the Interstate. Some health experts believe new weather conditions – hotter temperatures and more intense dust storms fueled by global warming – are creating a perfect storm for the transmission of coccidioidomycosis, also known as …