What is the in take? First,grassroots environmental organizations form in response to an energizing event, suchas the discovery of a cluster of cancer cases that can be linked to a local hazardousfacility; an incompetent disaster preparedness plan and response; or a flash flood causedby mountaintop removal for coal mining. Second, to address the problem, individualsrealize that they must collectively mobilize resources. Unlike the national organizations,grassroots movements depend almost entirely on volunteers