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WIGNALL:It's a layer high in ouratmosphere, and what it does is, it protects our planetfrom ultraviolet radiation from the sun, which isvery harmful for all life. SINGH:When these halogens reactwith the ozone layer, they weaken it, and that allows harmfulradiation from the sun to come through. NARRATOR:We've seen the Earth'sozone layer temporarily degraded in recent history. In the 1980s, industrial activity createda hole in the ozone layer over Antarctica. One that is now closing
Full Transcript
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WIGNALL It's a layer high in our atmosphere
00:00:03.034 --> 00:00:05.001
and what it does is
00:00:05.001 --> 00:00:07.567
it protects our planet from ultraviolet radiation
00:00:07.567 --> 00:00:10.934
from the sun which is very harmful for all life
00:00:10.934 --> 00:00:12.634
SINGH When these halogens react with the ozone layer
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they weaken it
00:00:14.003 --> 00:00:16.534
and that allows harmful radiation
00:00:16.534 --> 00:00:19.999
from the sun to come through
00:00:20.867 --> 00:00:23.967
NARRATOR We've seen the Earth's
00:00:23.967 --> 00:00:26.767
in recent history
00:00:26.767 --> 00:00:28.967
In the 1980s
00:00:28.967 --> 00:00:31.834
industrial activity created a hole in the ozone layer
00:00:31.834 --> 00:00:35.334
over Antarctica
00:00:35.334 --> 00:00:37.999
One that is now closing
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Movie Summary
Science documentaries about various topics.
