Here's what wikipedia has to say about the environmental impact of concrete [1]: Between 4-8% of total global CO2 emissions come from concrete. By the way,

Here's what wikipedia has to say about the environmental impact of concrete [1]: Between 4-8% of total global CO2 emissions come from concrete. By the way, this is during the production of concrete. When concrete sets, it actually absorbs CO2, it does not emit. The amount of CO2 that it absorbs does not appear to be significant however. [1] https://en.wikipedia.org/wiki/Environmental_impact_of_concrete https://en.wikipedia.org/wiki/Environmental_impact_of_concre...