Reports and studies vary in their estimates of carbon emissions. However, we feel that 40 billion tonnes of carbon (gigatonnes of carbon or GtC) emitted annually is about right. It is viewed that of these emissions 26% are absorbed by the oceans, 28% by the rainforests and other plants and 46% is released into the atmosphere. This puts annual rainforest sequestration at around the 10 GtC mark.