New CO2 concentration counter on Carbon Forum website

We have an exciting new feature on the Carbon Forum website; an atmospheric CO2 concentration counter. This came about because I've had one of these on my Google page for some time now, and I became curious about how it worked and where the data came from, so I sent an email to the developer, Andy Rankin. He got back to me with all the info about the counter I could wish for and a link to his website, the CO2 counter homepage, where the HTML code is freely available for anyone who would like to have a CO2 counter on their website.