no it hasn't
that's the point. (unless you're talking about just after it was 'created')
(shux, Fri 12 Jan 2007, 13:29, archived)

erm, yes it has
there have been significant periods where there have been no polar ice caps. I'd classify that as "warmer"
( the mighty badger Aphrodite, on a bar stool, by your side, Fri 12 Jan 2007, 13:36, archived)