When Sililo Agness Musutu, WWF-Zambia’s freshwater program coordinator, heard about plans to build a hydropower dam on the free-flowing Luangwa River, she knew she had to stop it somehow. This poorly conceived power project would flood whole communities, cause drought in others, devastate the river basin’s wild animal and fish populations, and irrevocably damage the wildlife tourism industry. She was certain if Zambians were aware, they wouldn’t want the dam. But she knew one voice wouldn’t be enough—she had to pull in the right people to amplify the issue. So Musutu, with help from the WWF-Zambia team, connected with leaders of multiple chiefdoms in the Luangwa basin, who talked with their communities. She brought scientists together with government agencies to discuss the impacts. She got Luangwa residents, tour guides, and revered Zambian activists to speak out for the river in national PSAs. And she worked together with WWF-US and WWF-Netherlands to get almost 200,000 signatures on a petition to protect the Luangwa. Her collaborative strategy was a huge success: In June, the Zambian government announced they were halting plans to build the dam.