President George W. Bush stirred the debate on the teaching of evolution in schools when he said this week that he supported the teaching of alternative viewpoints - such as the theory of Intelligent Design - to help students "understand what the debate is about".

"I think that part of education is to expose people to different schools of thought," Mr Bush said in comments to five Texas newspapers on Monday. "You're asking me whether or not people ought to be exposed to different ideas, the answer is yes."