When vying for its Olympic bid, Beijing promised that it could stage a green games. So what makes an international event "green," and what's Beijing doing to prepare for its debut?
The idea behind a green transportation infrastructure is one that provides opportunities for people to get around their communities using their own power -- such as walking or biking. In this article we 10 ideas for greener transportation. See more »
Agronomists, environmentalists, and economists around the globe have been debating how to feed everyone on it for years and years. See more »