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The Hewlett Foundation tackles the world's most pressing environmental problems.

  • Support land and water conservation and protection in the Western United States
  • Protect air quality throughout California
  • Promote sustainable energy in the United States and around the world
  • Help China go green by developing sustainable transportation and urban planning
  • Promote sustainable transportation around the world
  • Protect the rights of people affected by air pollution
  • Promote sustainable and environmentally neutral biofuels and biofuel policy
  • Investigate the links between population and the environment
  • Expand access to urban parks and outdoor recreation for poor communities and neighborhoods