This story was originally published by Grist and is reproduced here as part of the Climate Desk collaboration. Nearly a billion people could be newly at risk of tropical diseases like dengue fever and Zika as climate change shifts the range of mosquitoes, according to a new study. Since the life cycle of mosquitoes is temperature sensitive, scientists have long been concerned about how their prevalence might spread as the world continues to warm.

Learn about your ad choices: dovetail.prx.org/ad-choices