Brazil's Lula appoints Indigenous ministers to reverse Amazon deforestation csmonitor.com Submitted by loggiews t3_10k04gj on January 24, 2023 at 7:35 AM in worldnews 184 comments 9,122
Weegee_Spaghetti t1_j5qk1e9 wrote on January 24, 2023 at 9:36 PM Reply to comment by seapulse in Brazil's Lula appoints Indigenous ministers to reverse Amazon deforestation by loggiews sand and concrete shortage lmfao. Permalink Parent −4− seapulse t1_j5qoc8i wrote on January 24, 2023 at 10:02 PM Sand, however, is the most-consumed natural resource on the planet besides water. People use some 50 billion tonnes of “aggregate” – the industry term for sand and gravel, which tend to be found together – every year. That’s more than enough to blanket the entire United Kingdom. The problem lies in the type of sand we are using. Desert sand is largely useless to us. The overwhelming bulk of the sand we harvest goes to make concrete, and for that purpose, desert sand grains are the wrong shape. Eroded by wind rather than water, they are too smooth and rounded to lock together to form stable concrete. Permalink Parent 6
seapulse t1_j5qoc8i wrote on January 24, 2023 at 10:02 PM Sand, however, is the most-consumed natural resource on the planet besides water. People use some 50 billion tonnes of “aggregate” – the industry term for sand and gravel, which tend to be found together – every year. That’s more than enough to blanket the entire United Kingdom. The problem lies in the type of sand we are using. Desert sand is largely useless to us. The overwhelming bulk of the sand we harvest goes to make concrete, and for that purpose, desert sand grains are the wrong shape. Eroded by wind rather than water, they are too smooth and rounded to lock together to form stable concrete. Permalink Parent 6
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