Evolution is a fact. A fact is an agreed-upon observation made by competent observers. Before Columbus, it was a fact that the world was flat. The Buddhist view – if you are concerned about the differences between creationism and evolution, as I suspect you are because you posed this question – is that it really doesn’t matter. The things we find ourselves concerned with in this life, in this apprehension of reality, seem very important to us because when we aren’t enlightened we live in the day-to-day world. Even so, we need to stay aware of the fact that there is a deeper understanding of reality, in which creationism and evolution are paltry distinctions, unimportant to bringing lasting happiness to all sentient beings.