Rio de Janeiro bay reforestation shows mangroves' power to mitigate climate disasters

At the rear of Rio de Janeiro’s polluted Guanabara Bay, thousands of mangroves rise as tall as 13 feet, or about 4 meters, from a previously deforested area. The 30,000 trees were planted by non-profit organization Instituto Mar Urbano over four years in the Guapimirim environmental protection area. They stand as an example for cities seeking natural means to improve climate resilience. Such ecosystems are vital for protection against floods that have become increasingly frequent around the world. Mangroves slow sea water’s advance into riverbeds during storm surges by soaking it up, and protects the land by stabilizing soil that otherwise could be washed away.