I don't know.��I don't know if I believe in ghosts. I don't know if I believe there is intelligent life on other planets.I really don't know.But it's fun to think it's possible, right?About three years ago I read a children's picture book to my twins, titled, "The Big Red Barn." It's a great book but has a curious beginning. It says, ���But in this story, the children are away. Only the animals are here today.���My son put his hand on the page and stopped me.��"Where are the children?" he