Recent news coverage around the globe has highlighted individual outbreaks of diseases such as Zika, malaria, West Nile virus, yellow fever, chikungunya, and dengue. But there is a bigger story to be told, one that connects the dots between these diseases and reveals how a single force is driving them all: the unceasing, accelerating expansion of the mosquito around the globe, driven by factors such as increasing global travel and trade and a warmer world that is more hospitable to mosquitos.