Top scientist says biofuels are scam

[Bulldog]

Brian, thanks;
My whole point in post this article was because of the following.

Roland Clift will tell a seminar of the Royal Academy of Engineering that the plan to promote bioethanol and biodiesel produced from plants is a “scam”.
Clift, professor of environmental technology at Surrey University, sits on the scientific advisory council of Defra, David Miliband’s environment department.
He will tell the seminar that promoting the use of biofuels is likely to increase greenhouse gas emissions.

Since I am new here please forgive me for asking but what is the meaning of TOS? I await your response and will hold all future postings.