Michael Majerus however found that Kettlewell was basically correct in concluding that differential bird predation in a polluted environment was the primary cause of industrial melanism in the peppered moth. The story was in turn taken up in a 2002 book "Of Moths and Men", by the journalist Judith Hooper, asserting that Kettlewell's findings were fraudulent. The story was picked up by creationists who repeated the assertions of fraudulence. Zoologists including L. M. Cook, B. S. Grant, Majerus and David Rudge however all upheld Kettlewell's account, finding that each of Hooper's and the creationists' claims collapsed when the facts were examined.