But an environmental consulting firm hired by Fallon has dismissed the tungsten theory outright, insisting there’s no evidence it’s toxic. And other critics dismiss community cancer-cluster probes in general on the ground that they rarely unearth a smoking gun because there are too many factors at work. Such thinking infuriates parents like Rivers. “This town is too small and the cluster is too big for it to be just a coincidence,” she says. “They can’t ever stop looking.”
