There's a story circulating that Moses may have been on drugs and that's why he saw things like burning bushes and such. The story is here.
Scientists crack me up. They'll do anything to try and refute the Bible. A while back I heard about some scientist that said that when Jesus walked on water it was probably ice on the frozen lake. I guess it was during one of those subzero cold snaps they have in the middle east.
Don't get me wrong. I am not without my doubts about the Bible myself these days but I'm not about to come up with a bunch of wacky explanations to explain it all away. But then again, it's pretty funny to think about Moses blazing up a doobie.
Now, that's a burning bush!