Author: Peter Hobson and Stefica Nicol Bikes

In a world where roughly 50 billion metric tons of sand is extracted each year, mostly for concrete production, the environmental impact is significant. A 2022 UN report highlighted the destructive nature of sand extraction and the increasing scarcity of this vital resource. One innovative solution to this problem comes from an unlikely source – coffee grounds. A biochar company in Australia is pioneering the use of waste coffee grounds to create a sustainable alternative to sand in concrete production. This new biochar material, made from coffee waste, could potentially replace millions of tons of sand used in concrete globally.…