There was an interesting article in yesterday's Independent about the release of sub sea methane in the Arctic.You can link to the article by clicking on the image.
Remember that you have to be able to describe both the physical and human causes of climate change within the atmosphere section of paper 1 in the Higher geography exam. Given that methane is 20 times more effective as a greenhouse gas than carbon dioxide, the upwelling of large quantities of methane from deposits which have lain frozen since the Ice Age but which are now melting, may have a significant role in climate change.
