Reduce.org: Minnesota non-profit organization focused on ideas to reduce waste

Greener Choices: Launched by Consumers Union, the non-profit publisher of Consumer Reports, it aims to provide information about environmentally-friendly products and practices.

ReDO: A national and international non-profit organization promoting reuse on every level.

Green Seal: Organization that certifies that product sand services are environmentally responsible. Lists certified products and services on the site.

Business for Social Responsibility (BSR): A comprehensive worldwide information resource on corporate social responsibility.

Worldchanging: An online magazine covering tools, models and ideas for building a better future.

Ecological Footprint Quiz: Earth Day Network calculator that estimates how much productive land and water you need to support what you use and what you discard.

CERES: National network of investors, environmental organizations and other public interest groups working with companies and investors to address sustainability challenges such as global climate change.

Simple Living Network: Resources and tools for conscious, simple, healthy and restorative living.