Unfortunately RSVP's "We're coming out of an ice age" comment wasn't immediately moderated. But it's clearly off-topic, has nothing to do with the discussion on global cooling and hence has effectively derailed the conversation. So just a reminder to moderators - resist the temptation to respond to these kind of trolling comments. Otherwise too much discussion builds and it's too late to delete these comments. Remember the golden rule of moderation:

Operor non nutritor trolls
(Don't feed the trolls)