On the Web, an Advanced Carbon Calculator for Personal Use - New York Times

Glad to see this 

Many environmental groups offer simple carbon calculators on the Web, which allow people to figure the carbon dioxide production from daily routines like driving a car or lighting a house.

“But this is serious software, serious quantitative methods and social networking technology brought to the green world,” said Ron Dembo, the chief executive of Zerofootprint, a nonprofit group that provides information and services to combat global warming.

[...]

The Web service, called GoZero Footprint City Calculator, is a collaboration of Zerofootprint and Business Objects, a maker of business intelligence software.

Source: On the Web, an Advanced Carbon Calculator for Personal Use - New York Times