Visualizing the natural and anthropogenic carbon cycle
Check out (and please use!) this graphic that Galen developed in collaboration with the Ocean Carbon and Biogeochemistry Program and WHOI graphics. Found also here on the OCB website

Credit: Design: Natalie Renier, WHOI Creative ©WHOI; Concept: Galen McKinley, Columbia Univ., Lamont-Doherty Earth Observatory; Funding: Ocean Carbon & Biogeochemistry (OCB) Project Office (NSF, NASA)