The last years of Kowloon Walled City, Hong Kong.
Photos by Greg Girard. For more of his pictures of the city visit this link.
One day of transit in New York City, visualized in a mesmerizing animation.
The Science Barge greenhouse is a prototype of sustainable urban farm floating on the Hudson River. The greenhouse grows an abundance of fresh produce including tomatoes, melons, greens, and lettuce with zero net carbon emissions, zero pesticides, and zero runoff.
More at Groundwork Hudson Valley