This document discusses energy conservation and provides tips for saving energy. It begins by defining energy as the ability to do work, and notes that energy lights cities, powers vehicles and more. It then explains that we need to conserve energy because resources are limited and demands are increasing. Some ways to conserve mentioned include recycling, turning off unused devices, and replacing old light bulbs with energy efficient ones. Specific energy saving tips are provided for both home and public settings. The document emphasizes that conserving energy will save money and resources while reducing pollution. It provides an example of annual savings from replacing a light bulb. Overall, the document promotes energy conservation through various everyday practices.