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> Since concrete production accounts for 4.5% of the world’s greenhouse gas emissions, there is no way this is even close to being correct. For a point of com
by logicallee 9y ago
> Since concrete production accounts for 4.5% of the world’s greenhouse gas emissions,
there is no way this is even close to being correct. For a point of comparison, "Airlines account for about 2 percent of global emissions".
just how much concrete does this guy think is being produced. come on. He probably misreported a figure that said concrete production accounts for 4.5% of all construction-related greenhouse gas emissions.
- SteveGregory 9y agoConcrete production actually does have crazy CO2 emissions. Wikipedia says it's up to 5% globally: https://en.wikipedia.org/wiki/Environmental_impact_of_concrete https://en.wikipedia.org/wiki/Environmental_impact_of_concre...
- logicallee 9y agoThat's shocking. The Wikipedia page gives a 2002 reference (for the sentence you cite), so I guess in order of magnitude it must be correct. It seems to say that the reason for this is that it must be heated to absolutely insane temperatures, which is, obviously, energy-intensive. 5% is huge though. I still have trouble believing it. I wish I could see a pie chart with the major sources of CO2 emissions. After things like cars, planes, factories, POWER GENERATION, etc, I would have thought those were the major ones. if you Google "pie chart of co2 emissions" it's hard to see where just concrete fits in. Oh well.