Learn

The oldest landmarks in your neighborhood weren’t built. They were grown.

To learn more about why trees and forests are such a vital natural resource in America, visit the Facts page. Still want more? Check out the External Resources page for links to more in-depth information.

You’ll see some compelling facts and figures, such as:  

  • Deforestation accounts for 12 to 20% of the global greenhouse gas emissions that contribute to global warming.
  • Forests are home to 80% of terrestrial biodiversity.
  • Forests store more than 1 trillion tons of carbon.
  • Over 25% of private forestlands in the U.S. are certified to sustainable certification systems, compared to just 10% worldwide.
  • Roughly 1/3 of the total land area of the U.S. is forested (751 million acres).
  • Two-thirds of the clean water supply in the U.S. is found in stream water from precipitation that is filtered through forests.

Facts and Information

About IYOFTrees and forests play a crucial role in making our world healthy. From clean air and water, economic health, community and personal health to ecosystem health, trees and forests are making a positive difference everyday.

Trees save $2 billion annually in reduced energy costs in the U.S. alone. They improve our water quailty and employ 14 million globally.

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External Resources

The ThemeThe U.S. Forest Service, NASF and its partners and members offer a wealth of in depth information on the value of America's trees and forests. Each is also committed to serving and promoting trees and forests through various ongoing initiatives.

If you are interested in learning more, the External Resources page will assist you in finding this information.

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See Who Celebrated the Year of Forests

View the Event Archives »

Partners

Campaign Highlights

  • The official U.S. celebration of IYOF, “Celebrate Forests. Celebrate Life.” launched on March 1, 2011 in DC.
  • 115 events were held in 34 states and 1 territory.
  • Two states and one town made official IYOF proclamations.
  • First Annual National Walk in the Woods Day was held on May 21, 2011.
  • IYOF Photography Fellow visits 6 states and is documented in Huffington Post and Grist.
  • UNEP and UN Ambassador Don Cheadle creates "Supporting Forests" PSA.

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