Guessing glass in included in the aggregates cube? Windows, windshields, skylights, sunroofs, solar panels, aquarium tanks, zoo enclosures etc

I find it so surprising that around 70 percent of all human made resources such as concrete are made AFTER 1990. I mean 1990 is fairly a recent time and I don’t think we have experienced much of environmental changes. Where are all they? Do they mostly come from developing countries?

This is a stunning experience, and teaches you something at the same time.

Works perfectly fine on mobile, too!