The Atlantic Forest once covered a vast swath of Brazil, Paraguay and Argentina. But it has been reduced to fragments by centuries of logging, agricultural expansion and urbanization, including the growth of cities like Rio de Janeiro and Sao Paulo.

Hundreds of organizations are active in the Atlantic Forest Pact and the Trinational Network, a decades-long effort to protect and restore the forest in all three countries. Their initiatives are creating wildlife corridors for endangered species, like the jaguar and the golden lion tamarin, securing water supplies for people and nature, countering and building resilience to climate change, and creating thousands of jobs.