The Ten Scariest Things Seen by Microscopes

The world is full of living creatures we can't see. They outnumber us, and they can be terrifying. The reason we can't see them is because they are too small, and that's a blessing, because many of them would give us unending nightmares. Getting a look at them from a view through a microscope may be upsetting, but this is nature. If they could see us, they might be frightened as well. However, most are not all that ugly, just horribly dangerous to us. Number two is both. (via Boing Boing)