It’s been 35 years since the Montreal Protocol helped heal a hole in the ozone. Can those lessons curb climate change in less than 30 years?
The year was 1987, and Earth’s shield against the giant thermonuclear reaction in the sky was failing.
Human-made chemicals in aerosol cans and refrigeration were eating up a thin protective layer of atmospheric gas called ozone, and heavy doses of radiation from the sun were leaking through. Scientists warned of a dangerous weak spot over Antarctica – the “ozone hole” – and a dire future.