"Urban transport systems based on a combination of rail lines, bus lines, bicycle pathways, and pedestrian walkways offer the best of all possible worlds in providing mobility, low-cost transportation, and a healthy urban environment." –Lester R. Brown, Plan B 4.0: Mobilizing to Save Civilization.
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Eco-Economy Indicators
Eco-Economy Indicators are twelve trends that the Earth Policy Institute tracks to measure progress in building a sustainable economy.
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