Climate Action Day was yesterday, October 24th. It was organised by 350.org, and there were about 5200 events worldwide. One such event was ‘Picnic for the Planet‘, held in Ferney-Voltaire, organised by Paul (thanks Paul!). Ferney-Voltaire is just down the road from me, so Dweezeljazz and I went along. We gathered by the statue of Voltaire himself for a photo after the picnic. I think Voltaire would probably have approved of our actions, he was quite a force for change in his own day.
Climate Action Day was intended to send a message to politicians ahead of the December Climate Conference in Copenhagen, the message that people want atmospheric carbon dioxide reduced to a maximum of 350 parts per million (ppm).
Why 350 ppm? The 350.org site has a page explaining it. If you want a more detailed scientific explanation, you can take a look at Target atmospheric CO2: Where should humanity aim? (Open Atmos. Sci. J. (2008), vol. 2, pp. 217-231), by Jim Hansen et.al. The bottom line is that, if atmospheric CO2 levels remain higher than that for any length of time, the earth’s climate will change change out of all recognition. A great many species will go extinct and many vital ecosystems will be destroyed. Our lifestyle, anywhere on the planet, will become a lot more difficult to sustain, as whole countries become uninhabitable.
Of course, this would be a very bad thing!
Reducing atmospheric carbon dioxide to 350 ppm is entirely possible, the difficulties are political rather than technical. It’s difficult to get politicians to see past the next election, so they’re reluctant to embark on anything that requires global co-operation for a number of decades. If they go to Copenhagen with that attitude, they’re unlikely to solve the problem. We need a climate-change treaty that is fair, ambitious, and binding, and the sooner we get it, the better.
That’s the message we need ringing in the ears of our politicians as they go to Copenhagen, and that’s what Climate Action Day was all about. Picnic for the Planet was only one of the events yesterday. Take a look at the 350.org homepage, they have a slideshow of the photos people have sent in from all over the world, or visit the 350 blog. It’s impressive to see how many people took part. Anything that gets active participation from people in over 180 countries must surely count for something!