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The Top Ten Greenest States In U.S.

First Posted: 04/22/11 05:03 PM ET   Updated: 06/22/11 06:12 AM ET

Earth Day is the perfect time to celebrate the positive steps that some states are taking to preserve the environment. This year, the theme for Earth Day is "A Billion Acts of Green." The idea highlights the fact that many small acts can make a significant difference to the environment.

Last year, 24/7 Wall St. analyzed the environmental issues facing the each state. In observance of Earth Day, the rankings have been updated to reflect the most recent data.

24/7 Wall St. examined energy consumption, pollution problems and state energy policies. The most recent information, issued in 2009 and 2010, was used for all states. Thousands of data points were collected to determine the most and least “green” states.

Below are the ten greenest states in the 24/7 Wall St. ranking, based on environmental problems and how effectively these problems are addressed.

#10. Colorado
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Population: 5,024,748 (22nd)
GDP: $252.6 Billion (19th)
Toxic Waste: 41,532 Tons (19th)
Carbon Footprint: 98.1 Million Metric Tons (27th)
Alternative Energy: 10.0% (14th)

Colorado benefits in ranking from above-average pollution scores, scoring sixth best for birth-defect inducing toxins and carcinogenic chemicals released into waterways. Colorado also ranks 12th in particle pollution. The "Centennial State" has very good policy scores, ranking seventh for energy saving targets, according to ACEEE's assesment. More than 6% of Colorado's total energy output is from alternative resources, the eighth best rating in the country.

(AP Photo/Nathan Bilow)
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Filed by Joanna Zelman  |