Hey there, welcome. I'm Krista Bo Polanco, and this is CNN Five Good Things.

If I can get them to say one thing they never said to anybody about their trauma, that's success.

Hear how a Purple Heart recipient is helping thousands of his fellow veterans heal.

And off the coast of Australia, the largest living structure on the planet is in trouble.

Meet the scientist who's trying to save it.

Plus,

It's one of those things that it's going so well that you can't plan it as well as it's been going.

The events nationwide that are helping people see eye to eye.

And a love that's lasted so long, it's a world record.

When we come back, what happens when teens get a hold of a hot mic at school?

One good thing that happened to me today was I checked my grades and I had all A's. I finally got a girlfriend. And I got my

bases off recently. Schools in Monroe, Ohio are turning hot mics into gratitude mics. So we set up a

tripod on a camera with a microphone and on the microphone there was a sign with a prompt. And all

it said was, tell us something

good that happened to you today or recently.

Adam Markham is the public relations and communications coordinator for Monroe Local Schools.

The idea was inspired by an Instagram post of college students sharing their moments of joy.

So a few weeks ago, he placed the mic in a hallway where junior high and high school students

cross paths, recorded it, and posted the video on Instagram a few days ago. I woke up at the good

time today. It's for school. So I didn't miss the bus. I got 100% on my German test today.

Thank you. There was a new girl at school today and I think I made a new friend.

I was truly expecting kids to come up and say, I had a good breakfast.

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