The Times's Tom Zeller Jr. and Andrew C. Revkin, along with some people in Times Square, discuss the science and diplomacy behind the climate conference. Read more..

Sean Patrick Farrell - The New York Times

In a bid to introduce wind power into the cityscape, Dong Energy plans to sell a device that is only 30 feet high and produces enough energy for a family of four. Read more..

By NATALIA RACHLIN - International Herald Tribune

Without a high price for carbon emissions, most economists say, there are few prospects for the many investments needed to shift to a more sustainable energy base. Read more..

By JAMES KANTER - International Herald Tribune

A campaign for a new restaurant in Minneapolis includes at live video feed from the kitchen. Read more..

By STUART ELLIOTT - The New York Times

Under the ownership of American City Business Journals, Portfolio.com is being reinvented as more helpful and earnest. Read more..

By STEPHANIE CLIFFORD - The New York Times

This season’s promotions are putting a new twist on the Happy Meal model of film marketing, with some efforts branching out into unexpected realms. Read more..

By ARI KARPEL - The New York Times

Canada has the largest crude oil deposits in the world after Saudi Arabia, a bounty that makes it enemies as well as friends. Read more..

By HILLARY BRENHOUSE - International Herald Tribune

Significant challenges remain before the wind-energy industry can achieve its potential, and chief among these is cost. Read more..

By KATE GALBRAITH - International Herald Tribune