ClimateWire: Through tracking changes in the climate, researchers aim to get a lead on West Nile virus outbreaks by anticipating where the insects that spread the disease will emerge. Like most vector-borne pathogens, West Nile virus has links to temperature and rainfall. However, the disease can go from surging epidemics to nearly negligible numbers of infections from one year to the next, even under similar weather conditions (ClimateWire, Aug. 20). This makes it especially difficult for health officials...