As with the common use of plastic, the use of concrete/cement as a main building material is going to [have to] get phased out.
Unsurprisingly, Germany's on the ball.
Also, as with the problem of dealing with the plastic pandemic, the answer lies in the garbage itself, such as breaking down all the garbage to produce methane which is then used to create bio-plastics that actually biodegrade, and using fungi; so likewise they can use pollutants from smoke stacks to fabricate limestone...etc, etc. There are so many "alternatives" that are not alternatives but a whole new world opens up.
The world's garbage can become the next currency.
There's always so much we haven't thought about.
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