The Challenge: Tropical DeforestationTropical deforestation is a major contributor to climate change. This is because trees are made up of 50% carbon. When trees are cut down, that carbon is released into the atmosphere as carbon dioxide (CO2), the primary contributor to climate change. Through this process, deforestation releases more CO2 than the global contribution of all the world’s cars, planes and trains combined.The root cause of deforestation is people clearing land to grow food or earn an income, usually in the poorest parts of the world. Local poverty drives local deforestation and local deforestation drives global climate change.As a result, the solution to the problem is not as simple as planting new trees.