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Entries for January 2014

Cities are often viewed as dirty and polluted, but urban residents typically have a smaller carbon footprint than those who live in suburban or rural areas. Higher population densities provide a number of benefits, such as lower fuel consumption, less habitat destruction, and lower infrastructure costs. However, high population densities also present many challenges. Water, energy, and waste are issues that must be addressed to ensure cities are contributing to the advancement of sustainable development.

Zero-energy water purification - Expo 2010

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