【明報專訊】The reduction of CO2 emission is at the centre of the effort to mitigate the impact of climate change to the environment. Living a low carbon life is one way to achieve that goal. Every aspect of our lives, such as clothing, eating, accommodation and transportation, can be part of a low-carbon lifestyle if we follow the 4R principle: reduce, reuse, recycle and replace. Low-carbon living is closely related to sustainable development, living standard and energy technology.