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  1. Environmental Defense Fund - Building a vital Earth for everyone

  2. Overfishing: The most serious threat to our oceans

  3. How cap and trade works | Environmental Defense Fund

  4. About us - Environmental Defense Fund

  5. 9 ways we know humans caused climate change

  6. This is why fighting climate change is so urgent

  7. Plugging orphan wells across the United States

  8. Get involved - Environmental Defense Fund

  9. Contact us - Environmental Defense Fund