The amount of material consumed by humanity has passed 100bn tonnes every year, a report has revealed, but the proportion being recycled is falling. The climate and wildlife emergencies are driven by the unsustainable extraction of fossil fuels, metals, building materials and trees. The report’s authors warn that treating the world’s resources as limitless is leading towards global disaster. The materials used by the global economy have quadrupled since 1970, far faster than the population, which has doubled. In the last two years, consumption has jumped by more than 8% but the reuse of resources has fallen from 9.1% to 8.6%. The report, by the Circle Economy thinktank, was launched at the World Economic Forum in Davos. It shows that, on average, every person on Earth uses more than 13 tonnes of materials per year. But the report also found that some nations are making steps towards circular economies in which renewable energy underpins systems where waste and pollution are reduced to zero.