The first step is to conduct a thorough energy evaluation, measuring the amount of energy and money wasted by your building and researching how much you can save by retrofitting the lighting, heating, insulation, etc. Contact the Interfaith Coalition on Energy for resources directed at religious institutions. And your local power company probably provides assistance to customers trying to reduce their use of electricity and gas. Plant trees on synagogue or school grounds , along city streets, and in other appropriate areas. Use native species.
Trees absorb carbon dioxide, provide habitat for animals, and provide shade to keep buildings cool.
Advocate for change . Involve your city in the Cities for Climate Protection Campaign . Consumer Guide to Home Energy Savings and other publications. Organizes Climate Countdown through which you can receive email action alerts and information.