The Israeli team sprayed acacia trees in an oasis in the southern desert region of the country with a sugarsolution containing the insecticide Spinosad.
Indeed, the mutants were no more interested in a dilute sugarsolution (or, indeed, a solution of artificial sweetener) than they were in plain water though they did respond to concentrated solutions of sweetness.
In a lab at Brookhaven National Laboratory on Long Island, Gene-Jack Wang is injecting overeaters with a radioactive sugarsolution and putting them into a positron-emissions tomography machine to see how their brains react to food.