Bush to back bioethanol - but benefits are in the balance

http://environment.newscientist.com/article/dn11325-bush-to-back-bioethanol--but-benefits-are-in-the-balance.html
New Scientist

The beginning of a new international trading platform for bioethanol is expected to be announced on Friday, when US president George W Bush meets with Brazilian president Luiz Inacio "Lula" da Silva.