To come to this conclusion, GreenBiz.com examined 20 topics to create a GreenBiz Index to evaluate how “green” green businesses are these days. Turns out assessing each measure of green was a bit of a challenge. In most cases they weren’t able to find enough data to determine the impact green businesses are having on climate change.

(When you think about it, even a year ago most of us wouldn’t have even thought to ask how green a company was, let alone think about how to measure it! As time passes, we’ll have more indicators to track.)

Of the 20 indicators included in the GreenBiz Index:

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