"then the vast numbers of goats in Africa must be doing more than their bit"

I like to think I am helping by doing my bit too . . . especially as my wife is 12,000 miles away so I cook what I like all the time.

Cast iron (we've got a few Le Creusets) is also dangerous, especially if it falls on your foot, or you forget the handle is also iron and it's attached to the bit doing the cooking . . .