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From: john larkin <JL@gct.com>
Newsgroups: sci.electronics.design
Subject: Re: OT: light altering paint for greenhouses could help lengthen fruit growing season in the UK
Date: Sun, 24 Nov 2024 09:35:43 -0800
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On Sun, 24 Nov 2024 06:43:45 GMT, Jan Panteltje <alien@comet.invalid>
wrote:

>Light-altering paint for greenhouses could help lengthen the fruit growing season in the UK
> https://www.sciencedaily.com/releases/2024/11/241120122018.htm
>Summary:
> New spray developed by scientists could help boost UK farming and increase the UK's food security. 
>
>Paper:
> https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977
>
>stuff they use, quote:
>'
> In this paper, we develop an approach based on readily prepared and cheap
> Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
> possess the necessary design features listed before.
> Having established the ground rules for selective modification, 
> we introduce a working prototype luminophore with high PLQY (>60%)
> which is soluble in a range of commercial plastics, including water-based
> acrylic paint that can be sprayed onto conventional glass greenhouses
> in an agricultural environment. 
>'

Greenhouses will never grow much of the world's needed food.

But things keep getting better:

https://ourworldindata.org/grapher/index-of-cereal-production-yield-and-land-use

More CO2 is part of the reason, which is why people pump CO2 into
greenhouses.