Sedum breathes easily in New York City

Darkfrog submitted, created time 4 months 1 week (www.nytimes.com)

New York City is offering a tax abtements to businesses--particularly gas-chugging businesses--that create "green" roofs. The shrubberies absorb unpleasant gasses and rainwater during downpours, preventing it from becoming tainted runoff. It also seems that layers of rocks and plants, instead of wearing a roof out sooner, can prolong its life. Even so, it can be hard to tally up just how the businesses save money. Also, they can be critically expensive to install, especially in New York, which is why New York has so few shrubby roofs compared to European cities or even Chicago

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