Significant things happen when people concerned about Earth's environment work together. Politicians will not listen until we unite. Local projects in your community will not get done until you begin to work with like-minded neighbors.
Consider joining both a local community group as well as a nationwide organization. This way you can work effectively on local issues, such as recycling, community energy efficiency, or toxic wastes. Membership in a national level group lets you add your voice to important national and international issues. If you do not have a friend who belongs to a group you are interested in, feel free to write or call the group and request information before you join. ***