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Used coffee grounds were charred at 350 degrees Celsius until they became a charcoal-like biochar. That material replaced 15 percent of the sand by volume in a concrete mix (scienceblog.com)
submitted 23 hours ago* (last edited 23 hours ago) by inari@piefed.zip to c/environment@sh.itjust.works
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[-] Feathercrown@lemmy.world 1 points 4 hours ago

Why is there CO2 in rocks why are they breathing

this post was submitted on 07 Sep 2026
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Environment

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Environment:

The totality of the natural world, often excluding humans.

A subset of the natural world; an ecosystem.

The combination of external physical conditions that affect and influence the growth, development, behavior, and survival of organisms.

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