On average, buildings in the US are responsible for 40 percent of the carbon emissions that lead to global warming. In big cities it is even higher. In New York it is 79%, Hong Kong 72%, Toronto 69%, to give some examples. It is clear that if we are to...

We congratulate Senator Obama on his historic acceptance speech last night. His call for an end to the American dependence on foreign oil - and his laudable target of 10 years - should be applauded for the investment they will bring to alternative energy sources and other clean technology. Senator...

The world has changed on us. It is no longer our national governments that are in control of the affairs of the world. They are not in a position to solve the problems we face. Our big problems today are global - global warming and the reduction of CO2, terrorism,...

The most familiar plea made by environmentalists warning us of the immanent disappearance of this or that species is a question: how will we explain the absence of the polar bear, or the manatee, or a certain species of eagle, to our children?

It is certainly a haunting prospect, imagining...

Today, Ron Dembo's daughter, Justine, is writing in his place. Justine is a medical student at the University of Toronto.

I recently realized that the coffee companies of Toronto (and, no doubt, of the Western hemisphere) waste a tremendous amount. I noticed that my fellow medical students buy at least two...

We've got a heap of responses to "Black is the New Green," and they tend to fall into three themes. The first is to commend the idea of making computers more energy efficient through power-saving software. The second is to suggest that much of what we suggest is...