On Saturday 24th October a large number of people are gathering to demand action on climate change. Given the rather pessimistic news from the negotiations for Copenhagen it seems important to send as large a message as possible to our politicians, so please be involved if you can.

There are a large number of [...]

A recent interesting study is the first I have seen to look at our effect on the planet holistically. The Planetary Boundaries study is also described in Nature, defines nine major effects we have on the globe, and attempt to set sustainable thresholds for each. The effects described are climate forcing, ocean acidification, [...]