Atmospheric 14CO2 rose in the 1950s and 60s due to nuclear bomb testing. It has since dropped and levelled out.
Long-term studies show carbon dioxide levels in the atmosphere are rising. Radiocarbon carbon dioxide peaked in the 1960s but has since decreased. Much has been taken up by the ocean. Dr Kim ...
This survey will open in a new tab and you can fill it out after your visit to the site.