Emily Kwong

But I'm, like, curious, like, how did stuff made on Earth produce molecules that got all the way up there?

Because the stratosphere is miles above our heads.

It's, like, where planes fly.

Like, how could chemicals travel upwards that high?

Oh, so they hang out a long time.

What an accumulation of forces that led to this problem.

Okay, so what did scientists do in response?

Because obviously today the ozone is okay.

So why?

What happened, ultimately, to save the world?

Right, and that is how we get to the point now where the ozone layer is doing well.

I read it's the fifth smallest since the crisis.

Why hasn't the ozone fully thickened over Antarctica?

Is it because people are still using chemicals even though they're banned?

And to this day, people are still monitoring the ozone layer, right?

Like, we didn't fix the problem and just abandon Antarctica, right?

Yeah.

Greenhouse gas emissions.

We talk about that a lot on shortwave.

And it's a useful comparison because that existential issue is also human caused and could be human solved, so to speak.