http://sessybelle.files.wordpress.com/2010/02/lorax.jpg, accessed 15 July, 2010
http://coolaggregator.files.wordpress.com/2008/07/0606-inconvenient-truth.jpg, accessed 21 July, 2010
http://www.waterfootprint.org/?page=files/home, accessed 3 August, 2010
http://www.sciencemediacentre.co.nz/wp-content/upload/2009/09/virtual-water3.jpg, accessed 8 August, 2010
http://en.wikipedia.org/wiki/Deepwater_Horizon_oil_spill, accessed 28 August, 2010
http://en.wikipedia.org/wiki/Ixtoc_I_oil_spill, accessed 28 August, 2010
http://gokill.com/images/Oiled%20Pelicans,%20impacted%20from%20the%20Deepwater%20Horizon%20oil%20spill.jpg, accessed 29 August, 2010
