Technology
This is the official technology community of Lemmy.ml for all news related to creation and use of technology, and to facilitate civil, meaningful discussion around it.
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Also, the production of concrete releases carbon dioxide from the carbon stored in the minerals. Not different from burning a bunch of fossil fuels.
I know how is made concrete, among others, it is a residue of the blast furnaces from the steel manufacturing or it is also found in nature due to volcanic eruptions, which was already used in ancient Rome for their palaces, aqueducts and the Colosseum, all made of concrete. Anything that is manufactured implies an environmental impact, at least if you do not want to replace all constructions and buildings, your house, with constructions made with bamboo (also this has an impact in the environment). Also the fabrication of eolic generators and solar cells are not "green". It is a difference between a manufactured object, which involves a certain amount of non-renewable energy for its fabrication for the use of a lot of years, than using non-renewable energy continuously for a lot of years to provide electrical energy.