In community after community across Ghana, the complaints sound the same. The roads are dusty in the dry season. They become rivers of mud in the rains. Transport fares rise. Ambulances struggle.

Headlines warn that the world is running out of sand. In reality, sand is abundant — but usable construction sand is more complex than it seems. The real challenge lies in extraction, transportation, ...

Construction crews are literally dredging rivers dry while sitting next to infinite piles of worthless sand. That paradox might finally have a solution, thanks to researchers who figured out how to ...