The Environmental Justice movement grew out of community activism and advocacy for better standards for protecting the health of people of color and low income communities. Although there were existing laws and regulations designed to protect human health, these protections were not afforded to all communities equally. Minority communities were left to languish in the shadow of industrial facilities inundated with toxic chemical pollution. It was their struggle for justice and equal protection under the law that; (1) changed the culture of an agency; (2) shifted a research paradigm with the creation of a new approach and methodology that embraced community involvement (Community Based Participatory Research); (3) motivated the development of citizen science as a credible discipline; and (4) produced science that was more protective of communities. This presentation will review this transformation and analyze its impact on vulnerable communities.