Every year, the world consumes around 50 billion tonnes of sand, gravel and crushed stone. The astonishing scale of this demand is hard to comprehend—12.5 million Olympic sized swimming pools per year—making it the most-used solid material by humans. Every year, the world consumes around 50 billion tonnes of sand, gravel and crushed stone. The astonishing scale of this demand is hard to comprehend—12.5 million Olympic sized swimming pools per year—making it the most-used solid material by humans. Environment Phys.org – latest science and technology news stories
Nose-to-tail mining: How making sand from ore could solve a looming crisis
