But Princeton Lyman, of the Council on Foreign Relations, says the net effect of all this pressure has been zero.

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As retailing becomes more competitive, the demand for low costs, ultrafast turnarounds and zero mistakes in clothing production has put enormous pressure on factories throughout the developing world.

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Once deforestation falls to zero, which seems a plausible goal for 2030, the pressure for other forms of reduction will become even greater, and inaction now will make those reductions harder to achieve.

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If you expand or shrink any of these three imbalances, it puts pressure on the others to expand or shrink to maintain the net zero balance.

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His aim is to keep up the pressure so that, by the 2006 election, net borrowing will have been cut to zero and a start can be made on reducing the mountain of accumulated debt, now about DM1, 500 billion.

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