Gaia

For an excellent critique of Gaia go to

http://home.planet.nl/~gkorthof/korthof69.htm

Or an article asking if we have time to save our planet;

http://www.alternet.org/environment/43606?page=1

Wikipedia has a very good introduction to Gaia

http://en.wikipedia.org/wiki/Gaia_hypothesis

Tim Lenton’s important article on Gaia and Natural Selection (the debate between Lovelock and Dawkins) is to be found here:

http://adi-38.bio.ib.usp.br/0440041/2006/lenton1998.pdf