Planting trees in the wrong places can make global warming worse, scientists say. This is why scientists are creating maps to help policy makers identify the best places for reforestation.
Trees, by absorbing carbon dioxide, play a vital role in absorbing greenhouse gases from human activity. But reforestation also has the effect of reducing the albedo - the power of a surface to reflect solar radiation - to a maximum on snow-covered ground and to a minimum for bodies of water or forest, according to the study.