Log in the woods

Question: You walk down a path through the woods everyday. You always walk by one particular large rotting log which weighs over a ton. The next day you notice that there is another large log underneath the familiar one that you've never seen before. How did it get there?

Question: During what month do people sleep the least?

Question: Two men were on a ship. They were both facing opposite directions, one facing east and the other facing west. But, they were both seeing each other. *WITHOUT MIRRORS* How is this possible?

Question: When is 99 more than 100?

Question: Which eight-letter word still remains a word after removing each letter from it?

Question: What goes through towns and over hills, but never moves?