http://www.nytimes.com/2011/07/08/business/energy-environment/corn-ethan...
http://www.renewablesbiz.com/article/11/07/us-photovoltaic-project-pipel...
http://www.rechargenews.com/energy/solar/article265281.ece
http://www.thenational.ae/lifestyle/personal-finance/hydropower-promises...
http://www.energycentral.com/utilitybusiness/international/news/en/20622...
http://volumatrixgroup.com/2011/07/04/solar-pyramids-to-power-abu-dhabi%...
http://www.solarindustrymag.com/e107_plugins/content/content.php?content...