Factsheets contain information covering topics such as Agriculture (eg., fertilizer consumption), Biodiversity (eg., known bird species) to Environmental Health (eg., air pollution damages).

Focuses on the 21st century challenges of climate change, resource degradation, population growth, and poverty.

Explores the implications of the growing interconnectedness of the world.

A knowledge management project for international negotiations and related activities on climate change.

A detailed hypertext history by science historian Spencer Weart.

RealClimate is a commentary site on climate science by working climate scientists.

Offers full reports that examine global and local energy use and outlooks.

The U.S. Energy Information Administration (EIA) collects, analyzes, and disseminates independent and impartial energy information to promote sound policymaking, efficient markets, and public understanding of energy and its interaction with the economy and the environment.

Everything from history of to pros and cons for using solar energy.

Flex Your Power is California's statewide energy efficiency marketing and outreach campaign. It is a partnership of California's utilities, residents, businesses, institutions, government agencies and nonprofit organizations working to save energy.

Conservation International partners with governments on local, regional, and national levels around the world to deal with high priority areas of concern.

Estimates of wealth and its components are available for nearly 120 countries.

The Missouri Botanical Garden's mission is driven by the need to protect and conserve plants and their ecosystems. The organization eeks to educate all about the benefits of being good environmental stewards through responsible and sustainable use of natural resources.

"NRDC is the nation's most effective environmental action organization."

The PRB "informs people around the world about population, health, and the environment, and empowers them to use that information to advance the well-being of current and future generations."

"The FAO of the UN is the world's leader if efforts to eliminate hunger. In that vein, the organization has created this informational site, which brings together several analyses, reports, and statistics about the current global food and hunger crisis."