Thank you (and the other Francis) for correcting me. I got it mixed up. I was reading about wormholes (or was it white holes?) recently and there was a chapter about matter that has (may have) negative mass. Don't remember the term but it wasn't antimatter. Regarding creationism, I'm on the fence. If there is only one universe, it is 'interesting' that life evolved. Not because of the position of the planet, the size of the star or the moon or anything but because of the constants of the universe itself. If any of the 6 were only a little bit different, the universe would be vastly different and life as we know it couldn't exist. However, if there are multiple universes, then our existence is, as Dubious said, just a statistical inevitability.
