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Traffic signal, streetlight, and boiler upgrades exceed estimated savings by 25%.
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A troop of volunteers is trekking cross-country to pick up trash and educate about conservation.
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In the shadow of one of last century's greatest civil projects, designers and engineers forged a bypass out of river and rock in one of the nation's most unforgiving environments. Here's how they did it.
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Click here for a tree guide, more on reverse auctions, cost-cutting ideas and additional content from this month's issue!
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Working canines battle pestilence in public spaces.