Clifford over at Asymptotia talks a bit about a new discovery that might explain why there is so much matter and so little antimatter in the Universe. This is one of the biggest as-yet unexplained questions in all of science, and this new discovery -- covered in the New York Times -- may be a key to understanding it.
Matter and antimatter are arbitrarily named; had there been more of what we call antimatter made in the early Universe, we'd be calling antimatter matter and matter antimatter. Confused? Wait until you try to figure out if I'm evil because I have a beard in our matter Universe or if I would be evil if I had no beard in an antimatter one!
Not that it matters.