Learn how to calculate your carbon footprint - and how to reduce it.

As the United States' population hit 300 million in October 2006, the nation's largest population group, Population Connection, has an action plan to tackle population growth - a factor that causes and/or exacerbates other problems as diverse as traffic congestion, overcrowded classrooms, childhood asthma, and global warming. Clicking this link will take you to another site.

Stay abreast of the news and learn ways to reduce your impact.

Stay abreast of the news and learn ways to reduce your impact.