World's household consumption expenditure was US $20 trillion in 2000, up from US $4.8 trillion in 1960. Some of the increase was because of population growth, but much of it was driven by rising incomes
The consumption frenzy led to unsustainable use of natural resources. Between 1960 and 1995, worldwide use of minerals rose by 2.5 fold, metals by 2.1 fold and wood products by 2.3 fold
1.9 hectares of productive land is available for each person. But every human uses 2.3 hectares
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