"**In 2019, the world consumed about 4.5 billion tons of cement, 1.8 billion tons of steel, 370 million tons of plastics, and 150 million tons of ammonia**, and they are not readily replaceable by other materials—certainly not in the near future or on a global scale." ([Location 1584](https://readwise.io/to_kindle?action=open&asin=B08SGC3TD3&location=1584)) --- **Tags** -- [[quotes]], [[cement]], [[Danielle Steel|Steel]], [[plastics]], [[ammonia]], [[economics]], [[data-analytics]], **Source** -- [[202412030828 - B - How the World Really Works]]