Right now we are consuming about 85 billion tons of material stuff per year, exceeding the sustainable threshold by 70%. According to the UN, our resource use will rise to at least 132 billion tons per year by 2050, and possibly as high as 180 billion tons.
It is on this basis that scientists have concluded that absolute decoupling of GDP from aggregate resource use is not possible. But the ecomodernists at the Breakthrough Institute aren’t convinced.