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Anti-aging with infra-red light
Not for me, thanks (too late anyway) 🙂
Aug 26
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Richard McKenzie
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Anti-aging with infra-red light
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UV risk from nail-polish curing
Some might think it's worth the risk. I don't.
Aug 15
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Richard McKenzie
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UV risk from nail-polish curing
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New light on the health benefits from small exposures to UV radiation
The big question is: Do they outweigh the risks?
Aug 5
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Richard McKenzie
4
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New light on the health benefits from small exposures to UV radiation
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July 2025
Valuable UV resource restored
...with thanks to the old NIWA web team.
Jul 25
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Richard McKenzie
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Valuable UV resource restored
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Repairing UV-damaged skin: a personal case study
The Good, the Bad, and the Ugly (not necessarily in that order).
Jul 14
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Richard McKenzie
4
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Repairing UV-damaged skin: a personal case study
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My take on 'Don't Look Up'
Asteroids and warming ...
Jul 4
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Richard McKenzie
6
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My take on 'Don't Look Up'
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June 2025
Albedo reductions amplify climate change
Bad news, or good? Only time will tell.
Jun 23
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Richard McKenzie
2
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Albedo reductions amplify climate change
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What's the REAL SPF of that sunscreen?
.... why it can differ from lab tests and for different sun elevation angles.
Jun 13
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Richard McKenzie
2
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What's the REAL SPF of that sunscreen?
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When bad news is good news
Like a good joke, it's all in the timing ...
Jun 3
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Richard McKenzie
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When bad news is good news
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Rule-of-thumb for UV blocking by clouds
They equivalent SPF is less than 5.
Jun 3
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Richard McKenzie
5
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Rule-of-thumb for UV blocking by clouds
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May 2025
UV blocking by clothing
Just keep your shirt (and trousers) on
May 23
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Richard McKenzie
3
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UV blocking by clothing
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Sunscreen heresy
Why are the SPFs of sunscreens so high these days? Is it a good thing?
May 13
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Richard McKenzie
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Sunscreen heresy
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