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Science Weekly

How did we save the ozone layer?

Science Weekly

The Guardian

Science

4.21K Ratings

🗓️ 12 January 2023

⏱️ 18 minutes

🧾️ Download transcript

Summary

A UN report has found the Earth’s ozone layer is on course to be healed within the next 40 years. What was once humanity’s most feared environmental peril is now an example of how the world can take collective action. Madeleine Finlay speaks to atmospheric scientist Paul Newman about this momentous achievement and whether it really is the end of the story. Help support our independent journalism at theguardian.com/sciencepod

Transcript

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0:00.0

This is the Guardian.

0:09.0

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local food scene or tour the diverse landscapes of the state's grand national parks.

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uncover more at the Guardian.com

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forward slash Discover Texas.

0:33.8

This message was paid for by travel Texas, visit Austin,

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visit Dallas, visit Houston and visit Fort Worth.

0:39.5

Well, if you're not this wall through, you could over-plan the living area.

0:43.4

So I'm thinking burnt oka, paired with some terracotta times, vary in season right now.

0:47.6

When it comes to making big decisions for how we improve our homes, we rely on the advice of experts. So So shouldn't it be the same for the way we heat

0:54.6

and power them at EDF waste specialists in low-carbon technology for homes? We've

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installed thousands of air source heat pumps solar panels and batteries across the country.

1:03.0

And we also have useful content to help you make the right decision for your home.

1:06.7

Search EDF Energy.com slash Energy Specialist to find out more. It's not often I get to bring you a positive environmental story on Science Weekly. But news spoke this week which had us all celebrating.

1:26.5

The phase out of nearly 99% of banned ozone depleting substances has succeeded in safeguarding the ozone layer

1:34.7

leading to notable recovery of the ozone layer in the upper stratosphere and

1:39.6

decreased human exposure to harmful ultraviolet rays from the sun.

1:44.0

The ozone layer is on track to recover completely within 40 years,

1:49.0

giving many people hope that in the future the world can come together to tackle environmental issues successfully.

1:57.0

So today we're taking a look at this momentous scientific and political

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