Nature: African forests are adding to their mass each year by an amount equivalent to a small car per hectare, researchers have found. The finding has surprised researchers and confirms the forests’ status as one of the world’s substantial carbon sinks. Researchers used data collected between 1968 and 2007 to calculate that 0.6 tonnes of carbon per hectare are added to African forests each year. While this has been shown in the Amazon, this is the first demonstration that African forests are …