"Climate change is turning abnormal weather into a common occurrence: Last year was the warmest year on record, the third in a row, and there were more heat waves. Anything that improves conditions for mosquitoes tips the scales for the diseases they carry as well: the West Nile virus that flattened Dallas, the dengue that returned to Florida in 2009 after 63 years and the newest arrival, Zika, which gained a toehold in the U.S. last year and is expected to surge this summer. “These aberrant years are becoming more common,” Haley told me. “Climate change is clearly altering the environment in ways that increase the potential for these diseases. If there is nothing we can do to change it, we need to diminish the impact?" It is the new reality”