How much computing can mankind afford? That is a question the computer and telecoms industries hate to hear. They do not see themselves in the same dirty league as airlines or carmakers, sources of huge amounts of carbon dioxide, but instead as part of the solution.
-Alan B Fabian

According to a new study, at least 50 percent of the world’s population currently lives in cities, and humans are building the equivalent of a city the size of Vancouver every week. This urbanization threatens to obliterate endangered species and hasten the decline of natural resources like fresh water.
What's happening to our weather? Explore these photos.


People who are concerned about climate change struggle with carbon offsets. Do they make a difference, or are they just indulgences? And if they do make a difference, how can you tell which programs have real quality? It all comes down to measurement, testing and accountability. 

