David,
Sorry, my old Mac won't accommodate the new FlashPlayer which is needed to see your BBC video.

Adam,
I agree, we seem headed for a major supply & price squeeze with droughts in UK and mainland Europe, Russia and especially western China:
http://www.chinadaily.com.cn/busines...t_12597124.htm

Add in wet conditions in southern Quebec, central Manitoba and Missouri/Mississippi watersheds, and we may have a very significant supply problem by October.

- rick