Nearly 5 billion tonnes of carbon absorbed by undisturbed tropical forests . Study found that trees in forests are getting bigger . New carbon sink discovered in Africa that mops up 1.2 billion tons of CO2 . This includes a previously unknown carbon sink in Africa , which annually absorbs 1.2 billion tons of CO2 . CO2 says at least the past few decades humans emit Nearly 5 billion tonnes of IPCC .
Nearly 5 billion tonnes of carbon absorbed by undisturbed tropical forests . Study found that trees in forests are getting bigger . New carbon sink discovered in Africa that mops up 1.2 billion tons of CO2 . CO2 says at least the past few decades humans emit Nearly 5 billion tonnes of IPCC .