Another negotiating week on the road to Copenhagen has come and gone. We try and tell you as much as we can in plain English about where the talks currently stand, now that there are just 100 days left to go to Copenhagen.

Key points

• The Association of Small Island States and Least Developed Countries (together representing over 80 countries) now support both the 1.5C maximum temperature target and reducing greenhouse gases to a concentration level of 350ppm in the atmosphere
• More countries now support the 1.5C target than the 2C target that Europe and the Obama-convened Major Economies Forum (representing only 39 nations) support
• European Environment Commissioner, Stavros Dimas agrees that 2C is no longer safe and that the upper threshold should be 1.5C maximum temperature rise
• The Africa group of around 50 countries won’t support even a 2C target until they see stronger commitments from rich nations on domestic action and finance
• UN Intergovernmental Panel on Climate Change Chair, Rajendra Pachauri, has come out in support of the 350ppm target

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The 300-350 Show is made for ResonanceFM in London and is syndicated free to not-for-profit community radio stations and independent media outlets around the globe. The programme is named after what is now believed to the safe level in parts per million (ppm) of carbon dioxide in the atmosphere. This finding is based on the work of James Hansen and his team in a paper titled "Target Atmospheric CO2: Where Should Humanity Aim."  http://arxiv.org/abs/0804.1126