Congratulations to Castiglione di Cervia, Italy, the first place in modern Europe to feel one dismal effect of a warming world: a tropical disease out of its natural habitat. This summer, more than 100 people in the village of 2,000 came down with fever, exhaustion, and terrible bone pain later found to be caused by chikungunya, a disease spread by warm-climate-lovin’ tiger mosquitoes. “Climate change creates conditions that make it easier for this mosquito to survive and it opens the door to diseases that didn’t exist here previously,” says Dr. Roberto Bertollini of the World Health Organization. “This is a real issue. Now, today. It is not something a crazy environmentalist is warning about.”