| Carbon Offsets |
| Learn how to reduce your carbon footprint by purchasing carbon offsets to slow global warming and clean the environment at http://www.begreennow.com/. |
| http://www.begreennow.com [Detail] |
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| Open Innovation Marketplace |
| Philoptima - an open innovation marketplace of resourceful people
provides solutions to hard problems in business, various streams of science, engineering and product development. Several agencies post cash awards for best solutions. |
| http://www.philoptima.org/ [Detail] |
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| Tree Trail |
| This site describes some rare and threatened tree species native to the eastern United States. For each species, there is a description of its characteristics, its ecology, its native range, and its conservation status. |
| http://www.treetrail.net [Detail] |
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