Tropical rainforests have an outsized role in the world. Of the Earth’s ecosystems, rainforests support the largest variety of plants and animal species, house the majority of indigenous groups still living in isolation from the rest of humanity, and power the mightiest rivers. Rainforests lock up vast amounts of carbon, moderate local temperature, and influence rainfall and weather patterns at regional and planetary scales.
Despite their importance however, deforestation in the world’s tropical forests has remained persistently high since the 1980s due to rising human demand for food, fiber, and fuel and the failure to recognize the value of forests as healthy and productive ecosystems. Since 2002, an average of 3.2 million hectares of primary tropical forests—the most biodiverse and carbon-dense type of forest—have been destroyed per year. An even larger area of secondary forest is cleared or degraded.