Making cement from a different type of rock could clean up emissions

Ars Technica
By Scott K. JohnsonMay 15, 2026, 1:06 pm115 pts
Cement production alone currently accounts for about 8 percent of global CO2 emissions, so considerable effort is going into lowering that number. Efficiency can be increased, and energy sources can be swapped for cleaner ones, but a stubborn reality remains: The byproduct of turning limestone into lime during…

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