Logic Riddles

Question: What is 5,000 years old and still turning?

Question: There are two cars. The suburban is going 50 mph, and the mini van is going 30 mph. Although, the minivan passes the suburban and both cars are still going the same speed that they started at. How?

Question: There are three words in the English language that end with the letters 'g', 'r', and 'y'. Two are "hungry" and "angry." The third word is something everyone uses every day. Everyone knows what the third word means. What is the third word?

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

Question: What's the big question that everyone has a answer for but not everyone agrees?