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I've noticed that wind direction changes in the game and now my town is directly downwind from my industrial area, causing pollution and zombie attacks. Is there a way to get rid of the pollution? I'm already at the highest tech level for the industry, but my PPM are still significant.

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    Wind can change directions... oh man I'm screwed.
    – Reactgular
    Commented Mar 7, 2013 at 8:27

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In the toolbar at the bottom, click the Tree icon and plant some forests down wind of the factories. The trees will clean the air.

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    Are these the "Nature Parks" or the actual trees with the radial dropper?
    – EhevuTov
    Commented Mar 7, 2013 at 8:54
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    I think you can use the cheap "Plant Forest" dropper which costs $50 per forest. It's at the far right in the "Nature" tab. You can also try planting the narrow row of tree between buildings and see if that helps, but I don't think it's as effective as the forest.
    – Reactgular
    Commented Mar 7, 2013 at 9:09
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    I attempted to use trees to kill air pollution. The air pollution killed the trees.
    – Amy B
    Commented Mar 9, 2013 at 1:19
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    You need to keep replanting, until the the pollution is low enough for the trees to keep growing. I believe parks will help too.
    – Get Off My Lawn
    Commented Mar 9, 2013 at 16:53

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