Tree cover restoration is now firmly established as a strategy for removing carbon from the atmosphere to help tackle climate change. But there is an elephant in the room when it comes to estimating how promising a climate solution is in different locations. This is the "albedo" - the fraction of solar radiation that is reflected from the Earth's surface. In general, brighter surfaces—such as a large expanse of snow or grass—generally reflect a high proportion of sunlight back into space. Trees, meanwhile, tend to be darker and absorb more sunlight, keeping it on Earth—usually in the form of excess heat. (More on Carboncredits.com)