One of the worldÕs leading urban and environmental economists tells us what our lives will be like when climate change arrives

What is a green city? What does it mean to say that San Francisco or Vancouver is more "green" than Houston or Beijing? When does urban growth lower environment

You are one of seven billion people on Earth. Whatever you or I do personally—eat tofu in a Hummer or hamburgers in a Prius—the planet doesn't notice. In ou

How individuals and the government are changing life in China's polluted cities Over the past thirty years, even as China's economy has grown by leaps and bound

In the last century, Astronauts launched into the heavens, in search of new worlds to colonize, their adventures helping to catalyze the evolution of everything