A number of countries around the world, and indeed the E.U. as a whole, have chosen not to allow the import from the U.S. of beef from cows fed a diet that includes the hormone ractopamine, because of the fairly grave health concerns.

'Green' is likely to be a big issue in the 2008 U.S. presidential election - largely in response to George Bush's suicidal refusal to engage with environmental issues.

Leonardo DiCaprio is a rare phenomenon. Whereas for so many celebrities an interest in the environment is a fashionable accessory, for DiCaprio it is a thread that runs through everything he does.

Zac Goldsmith Quotes