Challenge #38, February 7, 2011: Take a wild guess about today´s challenge. You´ve got a 1 in 3 chance of being right! Did you guess `appreciate your sense of hearing`? If so, you would be right. I think my favorite sound ever is the sound of ice falling in a big ice maker. That sound, in fact, is what gave me the idea for this series of challenges. I feel like thousands of sounds pass us every day without any recognition. I used to get ice to fill ice bins every day at work, and when I finally took notice of the noise it made, that instantly became my favorite chore. Today, listen to every little or big noise around you.