After hearing all the talk about climate change and global warming, many of us are now aware that we need to change our lifestyle in the battle to stop our planet from being a far less agreeable place to live.

We also know that changes start at home. But making your home life environmentally friendly — through saving energy and finding more sustainable ways of powering our domestic lives — remains a daunting challenge.

It's not that Japan lacks the technologies to build greener homes. In fact, during the G8 Summit in Toyako, Hokkaido, in July, the Economy, Trade and Industry Ministry showed off a ¥200 million, 200-sq.-meter "Zero Emission House," the construction of which it had commissioned at a local resort.