Growing mosquito populations linked to urbanization, DDT's slow decay

Mosquito populations have increased as much as ten-fold over the past five decades in New York, New Jersey, and California, according to long-term datasets from mosquito monitoring programs. The number of mosquito species in these areas increased two- to four-fold in the same period. A new study finds the main drivers of these changes were the gradual waning of DDT concentrations in the environment and increased urbanization.

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