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A comment on The Ever-Present Glow of LED Greenhouses. Parent comment

Re:The Ever-Present Glow of LED Greenhouses by sxates on Tuesday October 22, 2019 @07:51PM (#21329686)
Maybe they should just pump that CO2 into the greenhouses!
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Re:The Ever-Present Glow of LED Greenhouses by foofoo55 on Wednesday October 23, 2019 @12:32AM (#21331060)
They do. But more commonly, CO2 is intentionally produced in greenhouses by burning natural gas (or propane) for no other reason than to create CO2 for the benefit of the plants:

https://dutchgreenhouses.com/technology/co2-enrichment

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