Concrete made from coffee grounds was found to be 30% stronger than normal at about 100 million tons - that's how much coffee ground is produced by people all over the world in a year. Coffee waste rots in landfills, releasing methane and carbon dioxide, which contribute to global warming. At the same time, people - including coffee lovers - are making concrete. by extracting millions of tons of sand for it. They spoil the landscape with quarries, which are often located along the banks of the river. And without sand you can't mix concrete. Two processes, united only by damage to the environment, formed the basis of an innovative invention by scientists from Australia. The essence of their idea: mix concrete using ground coffee, and replace at least part of the sand with it. The researchers "fried" the soil at a temperature of more than 350 degrees. As a result, the "raw material" was deprived of oxygen, creating a porous and carbon-rich "coal" - bio-char, as it was called. It, in turn, is built into the structure of the cement mixture, and creates very strong bonds with its components. By testing samples, scientists found that "coffee concrete" is almost 30% stronger than traditional concrete. In 2026, Australians were awarded the Ig Nobel Prize, awarded for achievements in science and technology that seemed ridiculous and far-fetched. Well, now they are literally the saviors of the earth.

Concrete made from coffee grounds was found to be 30% stronger than normal at about 100 million tons - that's how much coffee ground is produced by people all over the world in a year. Coffee waste rots in landfills, releasing methane and carbon dioxide, which contribute to global warming. At the same time, people - including coffee lovers - are making concrete. by extracting millions of tons of sand for it. They spoil the landscape with quarries, which are often located along the banks of the river. And without sand you can't mix concrete. Two processes, united only by damage to the environment, formed the basis of an innovative invention by scientists from Australia. The essence of their idea: mix concrete using ground coffee, and replace at least part of the sand with it. The researchers "fried" the soil at a temperature of more than 350 degrees. As a result, the "raw material" was deprived of oxygen, creating a porous and carbon-rich "coal" - bio-char, as it was called. It, in turn, is built into the structure of the cement mixture, and creates very strong bonds with its components. By testing samples, scientists found that "coffee concrete" is almost 30% stronger than traditional concrete. In 2026, Australians were awarded the Ig Nobel Prize, awarded for achievements in science and technology that seemed ridiculous and far-fetched. Well, now they are literally the saviors of the earth.