The article talks about the possibility to turn sand usage into some sort of circular economy, but that would mean recycling sand in some way. We can and definitely should recycle glass, but we can’t exactly recycle concrete used in buildings (except in the uncommon instances where buildings are torn down for whatever reason). So, one way or another, we need to develop a sustainable substitute for sand itself. (Sidenote: Can hempcrete help alleviate this problem, at least?)
Easily-overlooked but serious problem.
The article talks about the possibility to turn sand usage into some sort of circular economy, but that would mean recycling sand in some way. We can and definitely should recycle glass, but we can’t exactly recycle concrete used in buildings (except in the uncommon instances where buildings are torn down for whatever reason). So, one way or another, we need to develop a sustainable substitute for sand itself. (Sidenote: Can hempcrete help alleviate this problem, at least?)