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DIVERSIONS: The Mosquito Hunters

Government spraying of insecticide on Long Island has a checkered history. Mosquito eradication efforts, driven by fears of the spread of malaria, were paused in the 1960s after studies revealed the dangers posed by the insecticide D.D.T. to birds and humans. Twice a month — during the new and full moon tides — an East Hampton Town trustee and his team of volunteers walk miles of boggy marshland looking for mosquito larvae. The data, collected with the help of a plastic dipper cup affixed to a stick, is sent through a digital G.P.S.-enabled app to the county authorities who then tell their helicopter pilots precisely where to unload their cargo of larvicide.