Redwood National Park (Photo credit: Wikipedia)

• 1 tree makes on average 16.67 reams of copy paper or 8,333 sheets
• The average U.S. office worker prints 10,000 pages per year
• In 2004 the United States used 8 million tons of office paper (3.2 billion reams). That’s the equivalent of 178 million trees!
• A single mature tree can release enough oxygen back into the atmosphere to support 2 human beings.
• Each person in the U.S. generates approximately 2.3 tons of CO₂ each year.
• Deforestation is one of the main causes of atmospheric carbon dioxide; burning and cutting millions of acres of trees each year, it is responsible for 20-25 per cent of all carbon emissions.
• A single tree will absorb one ton of carbon dioxide over its lifetime. Shade provided by trees can also reduce your air conditioning bill by 10 to 15 percent.
• It only takes 30 trees to offset the C0₂ produced by one car annually.
• An average American uses about 750 pounds of paper every year, and 95% of homes are built using wood. That means each person uses the equivalent of one 100 foot tall, 16 inch diameter, tree every year for their paper and wood product needs.
• There are about 20,000 tree species in the world. The United States has one of the largest tree treasuries second only to India.
• Three trees planted in the right place around buildings can cut air-conditioning costs up to 50 percent.
• Trees improve water quality by slowing and filtering rain water as well as protecting aquifers and watersheds.
• The Hyperion on Redwood national park is believed to be the world’s tallest living tree, standing a formidable, 376′ tall.

Related articles

• Net Climate Benefit: Trees and Carbon Dioxide (forestry.answers.com)
• A single tree will absorb one ton of carbon dioxide over its lifetime (greenreview.blogspot.com)