Mars has been shown to be warming! Why? Because solar output has been increasing, and we also seem to have moved into a region of space in which there is much less intervening dust or so I've read.
Perhaps the angel of Revelations has begun pouring out his vial upon the sun. Perhap our sun is really a variable. Can't blame Bush for this one!
Oh believe me, they WILL try.
Do you happen to recall where you read that? I haven't heard it before.