20 ways to build a cleaner, healthier, smarter world.

• Localización: Scientific American, ISSN 0036-8733, Vol. 301, Nº. 6, 2009, págs. 50-50
• Idioma: inglés
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• Resumen

  • An introduction to the journal is presented in which the editors discuss several articles within a special section of the issue on scientific and technological innovations including projects in energy, transportation, and the environment.