this post was submitted on 28 Mar 2024
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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Indoor farms are remaking the produce market — at a cost to the planet (wapo.st)
submitted 8 months ago by silence7 to c/climate
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Energy use in the industry varies widely depending on greenhouse size and what crops are being grown. A study of 12 indoor farms by the nonprofit Resource Innovation Institute found that five of them used as much energy, per square foot, as a hospital. One vertical farm, an outlier, was guzzling as much energy as a data center.

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[–] hotelbravo722 9 points 8 months ago (1 children)

There is also the fact that they consume a lot less water. In regions where solar and wind energy are a surplus but fresh water is scarce, indoor farming makes more sense.

[–] sonori@beehaw.org 2 points 8 months ago (1 children)

Except the energy, carbon, and labor costs massively outweigh the costs of growing food out in the open where there is plentiful and reliable water and just putting it on a train or ship. That also cuts down on the amount of people who need to do labor and therefore live in areas where water is scarce.

I’m not saying that greenhouses are useless of course, just that I would expect them to be found more in water rich areas that just lack the growing season for the relevant crops and don’t think they can ever be a good solution to growing major crops like wheat, corn, rice, etc…

[–] hotelbravo722 3 points 8 months ago

Oh yeah at this time vertical farming is not suitable for staple crops. However because fruits/veggies lose a majority of their nutritional content when being transported growing them indoors closer to population centers makes more sense. Also would like to mention that the energy and carbon cost to an indoor farm are currently high right now however lots of work is being done to reduce those costs. Not saying it will ever be 0 but we can get closer. Like 3D printing hydroponic towers using recovered and repurposed plastic, integrating them into aquaculture systems to do aquaponics to provide a protein and high quality fertilizer source, placing them in skyscrapers with open walls to take better advantage of natural sunlight, etc. The current strategy of using climate control systems and LED lights is not the way forward IMO but hell it’s a start in a field of agriculture that hasn’t been touched in decades.