The resources fuelling the world economy increased more than eight percent in just two years from 93 billion tonnes in 2015 to 100.6 billion in 2017, the last year for which data is available.
Since 1970, the human population has doubled, the global economy has grown fourfold, and trade has expanded tenfold, a trajectory that -- in the absence of widespread recycling -- relentlessly pushes up the demand for energy and resources.
Global use of materials is projected to balloon to 170-184 billion tonnes by mid-century, the report said.
To improve living standards -- especially in low-income countries -- while also protecting ecosystems that provide clear water, air and soil, the world must vastly boost the share of recycled natural resources, the authors said.
Wealthy nations, the authors note, consume 10 times more resources per person than in the developing world, and produce far more waste.
Rich countries must "take responsibility for the impact of their imports and exports," the report said, noting that much of what they consume comes from less developed nations, while much of their waste is exported.
The report also noted that recycling rates are high in poorer countries, as waste can "provide a valuable source of revenue for informal workers." "China, for instance, has pioneered eco-industrial parks where the waste of one business becomes the feedstock for another.
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