You've just opened my eyes on the fumitory question - I only know one, and I didn't have an idea there were others. I want some in my garden!

And Pete, I haven't seen anything on explaining the protein survival, but the dating depends on so many strands of other evidence that all back each other up that it isn't going to shift. And go easy on the "evo" bit, will you? Irritating people doesn't help arguments, does it?

Penny