Previous Article Next Article Table of Contents Science, Vol.358, No.6360, 230-233, 2017 DOI10.1126/science.aam5962 Export Citation Tropical forests are a net carbon source based on aboveground measurements of gain and loss Baccini A., Walker W., Carvalho L., Farina M., Sulla-Menashe D., Houghton R. A. Please enable JavaScript to view the comments powered by Disqus.