From CNN 10.

On today’s CNN10: We look back at the September 11, 2001 terror attacks on the 24th anniversary of the day that forever changed history. Then, we’ll learn the latest on an unprecedented situation in Europe that has sent shockwaves through the NATO alliance. Plus, we’ll see how one team is using new techniques to protect coral reefs. All this and more on today’s CNN10!

A Note for Teachers: Some of today’s episode may be unsuitable for audiences younger than 13. Please use discretion when showing, and if you would like to skip ahead, you can start at 05:35