Algae-Grown Limestone

Published 2023-03

Portland cement, the most common type of cement, is made from quarried limestone and creates significant greenhouse gas emissions.

Verdict

fadedNot listed again within the publisher's next two editions, nor later (D33).

A trend is graded on whether the publisher keeps it, never as a hit or a miss (D6, D33).

rank: 635
section: Climate & Energy
subsection: Climate Trends / Green Materials
subject: Algae-Grown Limestone
page: 37
confidence: high
note: Appended 2026-10-02 after the existing entries (D15) by the contents audit (check_2023_contents.py, issue #26). The volume contents run over two pages; the first capture read only the first, so the trends listed on the second were missing.