"In fact, some experts fear that the world will run out of usable topsoil to grow food within 60 years."
"The estimate is that we are now losing about 1 percent of our topsoil every year to erosion, most of this caused by agriculture."
Topsoil Erosion
Stop growing food everyone!
I tried to find out how much sand gets washed away every year. I found this and just found lengthy explanations of how beach sand is insuitable for almost every project, sandy places import good sand, and we are running out of the good stuff:
https://www.newyorker.com/magazine/2...ng-out-of-sand
I just wondered how much land gets washed away every year. It seems like that would affect sea levels.