Anonymous ID: 40ebd3 March 8, 2019, 8:59 a.m. No.5575541   🗄️.is 🔗kun

>>5575109

>>5575109

 

Concrete = Sand harvesting from ocean floor.

More sand is extracted than fossil fuels.

 

https://www.smithsonianmag.com/science-nature/world-facing-global-sand-crisis-180964815/

 

http://coastalcare.org/sections/inform/sand-mining/