It Was Already the Deadliest Animal in the World. Now the Most Dangerous Species Are Coming Deeper and Deeper Into America.

Science How the Mosquito Is Conquering America The deadliest species of the world’s deadliest animal used to find it hard to survive in the United States. Now they’re here—and they’re thriving. Aug 04, 20265:45 AM On an overcast Wednesday morning in Salt Lake City this summer, four bicyclists gathered in an industrial area not far from the city’s airport before fanning out across town. They were on a mission to kill. Almost anyone in America would have supported them. The riders work for the Salt Lake City Mosquito Abatement District, the first mosquito-control program in the nation to launch a bicycle brigade, according to Ary Faraji, the district’s executive director. One rider stopped to kneel alongside the road, another at the edge of a park, to spritz stormwater catch basins with larv