Amid the skyscraping towers and ever-present haze of Shanghai, this rooftop garden is thriving. Despite my outsider view of China as smog-choked and green-less, I have witnessed many instances of food cultivation within city limits. This may be a progressive idea in America, where most of our farms are more like tomato-factories, but here it is a simple and inexpensive method of procuring one's dinner.
I'm sure all that excess CO2 might actually be helping some of these plants thrive. Perhaps the varieties that are doing well are those that can advantage of the elevated levels?
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