This century will be remembered as the urban century. Our generation will witness the most significant urban growth in human history. By 2050, there will be 2.4 billion more people in cities, a rate of urban growth that is the ...

Most people don’t associate cities with trees, but urban areas are actually dependent on healthy forests. Trees within cities reduce heat, provide spaces for recreation and socialization, and increase property values. Nearby trees in the watersheds around cities filter drinking water and ...

In the 1990s, New York City needed a new water filtration system to serve its nearly 8 million people. But the prospect of spending $6-10 billion on a new water treatment plant, and another $100 million on annual operating costs, ...

Municipal leaders face hundreds of difficult choices every day. With so many needs and worthy programs, how does one choose where to invest limited funding? In the face of pressing human needs, cities too often decide that funding for environmental ...