this post was submitted on 17 Jun 2023
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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.

Recommended actions to cut greenhouse gas emissions in the near future:

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Carl Sagan: “Every one of the things you would do to ameliorate climate change makes sense on completely separate grounds, they are worth doing apart from climate change.” (www.youtube.com)
submitted 1 year ago by cerement to c/climate
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full video: Carl Sagan Keynote Speech at Emerging Issues Forum (1990-02-09) (yes, over 30 years ago)

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[–] v2vhD7HK 1 points 1 year ago (1 children)

I didn't watch the whole video, but just economically your quote makes a whole lot of sense. Saving money and reducing our ecologicial footprint have a lot in common.

  • Not having a car, instead riding a bicycle or taking the bus: less greenhouse gases, but also much cheaper.
  • Cook your own food instead of buying over-packaged, ultra-processed food. I make my own bread which costs 0.75$/loaf vs. 3$ at the grocery store, for the same weight.
  • Buying stuff that lasts not only reduces waste but also costs less in the long run.
  • Leisure: reading a book is cheaper than going out.
[–] cerement 3 points 1 year ago

on the “big picture” side of things, this pairs with the meme “what if we create a better world for nothing” – the points on the board behind the presenter are just “side effects” of cleaning things up