Technology to deliver "dramatic" cuts in emissions already exists, but knowledge gaps and old habits mean progress in being made "at a snail's pace," argues the World Business Council for Sustainable Development (WBCSD) in a new report.

Low-income people who live in old or flimsy housing are becoming prime targets for cities and groups intent on slashing energy use.

Recent efforts to cut energy consumption in the home have focused on new construction, often in more affluent areas and public buildings. Now, community organizations and cities that have embraced the green effort are homing in on low-income houses and apartments to reduce emissions and help poor people lower their utility bills.