The Great Lakes only national marine sanctuary brings underwater history up close. Whether you’re in a glass-bottomed boat, looking down from a kayak, or diving underwater, the shipwrecks at the Thunder Bay National Marine Sanctuary give you a haunting look at the past.

Imagine you are appointed principal for a month. What rules would you change? What new policies would you create?

Mr. Peterson explains wind power and demonstrates how to write a strong opinion essay, highlighting the importance of renewable energy.