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Green or not? Test your eco knowledge

Published On: Apr 22 2013 11:27:50 AM CDT   Updated On: Apr 22 2014 09:18:29 AM CDT

As you celebrate Earth Day 2014, find out if you're living as "green" as you think.

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Putting one of these heating systems in isn't cheap. Systems can cost $10,000 to $25,000 and up. But again, you get a federal tax credit through 2016 and geothermal systems can cut your energy bills in half each year.

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