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On Point with Meghna Chakrabarti

How the world came together to save the ozone layer

On Point with Meghna Chakrabarti

WBUR

News, On Point, Daily, Npr, Talk Show

4.33.9K Ratings

🗓️ 30 January 2023

⏱️ 47 minutes

🧾️ Download transcript

Summary

In the 1980s, the world came together to ban CFCs, commonly used chemicals that were destroying the atmosphere’s ozone layer. Are there lessons we can apply to tackling climate change? Paul Newman and David Victor join Meghna Chakrabarti.

Transcript

Click on a timestamp to play from that location

0:00.0

This is on point. I'm Magna Chakrabardi and this one's for you. All you children of the

0:08.8

80s, you are my people. All that big hair, spandex, those scrunchies, some absolutely

0:16.2

epic music. And unfortunately, this.

0:21.0

I'm not going to micro-resonate with some bad news about the ozone. This medical news

0:24.8

update is brought to you by Edville, Advanced Medicine for Pain. The ozone layer sheds the

0:29.8

earth from the sun's ultraviolet rays. But a recent report concluded that this layer is

0:34.5

thinning rapidly. You would trace gases. Primarily, CFCs in consumer products.

0:40.2

You probably remember that. I do. The sudden realization that the ozone layer was in danger.

0:47.9

Something most of us had never even heard of prior to 1985. Skin cancer rates were going

0:53.0

to skyrocket. Crops could fail. Ecosystems could collapse. It was an existential threat.

1:01.0

One so urgent that I was one of those 10-year-olds who refused to crush a piece of styrofoam

1:06.7

for fear of releasing more CFCs into the air. The story, though, starts even further back,

1:13.6

with two scientists, Sherwood Roland and Mario Molina at the University of California Irvine.

1:19.4

This started back in 1972 and 1973 with curiosity on the part of a laboratory chemist, namely me,

1:29.0

about what would happen to the co-flurocarbon gases which had just been discovered as being

1:35.9

present in the atmosphere, essentially everywhere. And so when Dr. Mario Molina joined by research group

1:42.2

in 1973, we decided to ask a question about some chemicals that were just being released to

1:48.6

the environment and we realized that they could pose a serious global environmental problem.

1:56.4

Chloroflorocarbons or CFCs first developed in the 1920s and by mid-century used almost

2:05.2

everywhere around the earth in aerosol sprays as blowing agents for foams and packing materials

2:11.5

as solvents and refrigerants. Molina and Roland discovered these chemicals could reach the

2:17.2

upper atmosphere and destroy the ozone layer which provides vital protection from excess ultraviolet

...

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