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We've got an active shooter, Sergeant High School.

Thursday's high school shooting

renews the debate over gun legislation.

17 states believe one answer is the red flag law.

It's a temporary intervention to get the guns out of someone's hands who's in crisis.

You may be surprised by those who oppose it.

There are portions of the law I just flat out can't and won't do.

This is a law that was passed by the legislature.

It's signed by the governor. Nobody asked you.

It looks like a lunar landing, but it's actually three miles deep in the Pacific.

And while those may look like moon rocks, they're called nodules and they're worth trillions of dollars.

What makes them so valuable? What is in that?

Well, that is a electric vehicle battery in Iraq.

The world's most powerful countries are preparing to harvest them.

So why isn't America? That's our story tonight.

Nearly half of all Syrian refugees are children, more than three million of them.

How old are you guys?

We visited refugee camps in Jordan when it was 111 degrees.

There was no running water, no indoor plumbing.

But there was a brand new Sesame Street produced with characters that these young refugees can learn from as so many kids in America have for years.

I'm Leslie Stahl.

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