Cement and concrete is responsible for circa 8% of global GHG, and demand is increasing steadily.
Reposted from
Helen Czerski
This week's Rare Earth will be all about concrete, & I've just worked out that every 3 hours on Earth, we pour as much concrete as 2 entire Hoover dams (221m high, 200m wide at the base). That's around 5600 Hoover dam's worth of concrete every year. Not a terraformed world but a concrete-formed one!
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