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We are still fixing the ozone layer. I am an aerospace engineer and part of a project to test and certify a non-ozone depleting fire extinguishing agent to repl

We are still fixing the ozone layer. I am an aerospace engineer and part of a project to test and certify a non-ozone depleting fire extinguishing agent to replace Halon 1301 in commercial aircraft. Although production of Halon ceased in 1993, since then, ALL commercial aircraft have continued to be manufactured using stockpiled Halon. But the stockpile is being depleted, and as of 2014, manufacturers cannot apply for certification of new or derivative aircraft that use Halon fire extinguishing systems.

Taniwha 4y ago
yeah exactly - I live in New Zealand - the ozone layer here isn't fixed yet, sure the worst of the southern polar hole has closed up - but elevated UV, skin cancer etc is still a fact of life here - kids in some schools are required to wear hats at recess
- ccakes 4y ago
  https://en.wikipedia.org/wiki/List_of_countries_by_cancer_rate https://en.wikipedia.org/wiki/List_of_countries_by_cancer_ra... When skin cancer isn't removed as it is in some lists, the effects of the sun in Australia and New Zealand really shines through. Interestingly it's not because of the ozone layer though. The Earths orbit brings it just under 2% closer to the sun during January which means the southern hemisphere gets ~7% more UV than the northern hemisphere during our respective summers. That coupled with predominantly white skin == cancer! Source: https://www.cancerwa.asn.au/articles/news-2018/why-does-australia-have-so-much-skin-cancer-hint-i/ https://www.cancerwa.asn.au/articles/news-2018/why-does-aust...
  - antod 4y ago
    Yeah the ozone hole supposedly wasn't really the reason for skin cancer rates as the 'hole' itself never really extended much past Antarctica. It's more to do with your factors, clearer air, and possibly the global drop in ozone levels. Although I have had white South Africans living in NZ mention the stark increase in sunburn for them, so other parts of the southern hemisphere don't experience it for some reason?!?
- gumby 4y ago
  The Slip-Slop-Slap campaign made a huge difference, in particular for kids. My dad (b mid 1930s in South Australia) has a half a dozen skin cancers removed every year after decades of continuous sunburns when people thought it was good for you.

Taniwha 4y ago

yeah exactly - I live in New Zealand - the ozone layer here isn't fixed yet, sure the worst of the southern polar hole has closed up - but elevated UV, skin cancer etc is still a fact of life here - kids in some schools are required to wear hats at recess

ccakes 4y ago
https://en.wikipedia.org/wiki/List_of_countries_by_cancer_rate https://en.wikipedia.org/wiki/List_of_countries_by_cancer_ra... When skin cancer isn't removed as it is in some lists, the effects of the sun in Australia and New Zealand really shines through. Interestingly it's not because of the ozone layer though. The Earths orbit brings it just under 2% closer to the sun during January which means the southern hemisphere gets ~7% more UV than the northern hemisphere during our respective summers. That coupled with predominantly white skin == cancer! Source: https://www.cancerwa.asn.au/articles/news-2018/why-does-australia-have-so-much-skin-cancer-hint-i/ https://www.cancerwa.asn.au/articles/news-2018/why-does-aust...
- antod 4y ago
  Yeah the ozone hole supposedly wasn't really the reason for skin cancer rates as the 'hole' itself never really extended much past Antarctica. It's more to do with your factors, clearer air, and possibly the global drop in ozone levels. Although I have had white South Africans living in NZ mention the stark increase in sunburn for them, so other parts of the southern hemisphere don't experience it for some reason?!?
gumby 4y ago
The Slip-Slop-Slap campaign made a huge difference, in particular for kids. My dad (b mid 1930s in South Australia) has a half a dozen skin cancers removed every year after decades of continuous sunburns when people thought it was good for you.