Hi,
Have you heard of the I Count campaign yet? It is a coalition of 50 trusted campaigning organisations focused on "stopping climate chaos". See
http://www.ICount.org.uk I've already signed up online and they provide a range of good options for how I can be part of reducing my carbon footprint. There are probably some options you can act on too.
You might be aware that a massive global concert series called Live Earth (like Bob Geldof's Live 8 in 2005) is taking place on Sat. 7 July and I Count is the UK NGO partner that will benefit from the awareness Live Earth generates....so keep an eye on that too at:
http://www.ICount.org.uk