Today is the anniversary of the sinking of the Edmund Fitzgerald, a large ore-carrying freighter that crossed Lake Superior in a strong mid-latitude cyclone (low pressure center) and foundered just before reaching a safe area. The ship disappeared from radar and was found later at the bottom of the lake. All 29 sailors aboard the ship died in the wreck. Here are a couple of blog posts about the event. Now you have your earworm for the day!