Stella Bowles is an example of how one person—even a young person—can make a very big difference. Stella’s grade 6 science project that tested the fecal bacteria present in the river near her home, eventually led to convincing three levels of government to pledge $15.7 million to help clean it up. In this exclusive Green Interview, Stella talks about her science project, and how it led to the attention, the awards, a book, and ultimately to a commitment to clean up the LaHave River in Bridgewater, Nova Scotia. For her work, Stella was named one of Canada’s top 25 environmentalists under 25.