The U.S. government’s official search engine with about 50 million pages from federal, state, local, territorial and tribal websites.

The Environment Statistics Section of the United Nations Statistics Division (UNSD) is engaged in the development of methodologies, data collection, technical cooperation, and coordination in the fields of environmental statistics and indicators.

Covers environmental health topics including air/water pollution, healthy places, and links to morbidity reports/statistics.

Includes information on all aspects of the Convention, Cartagena Protocol, Nagoya Protocol, and related programs. The CBD Secretariat maintains the site in its role of serving as an information clearinghouse and increasing "public education and awareness."

Offers free lesson plans and evaluations of K-12 textbooks for scientific accuracy.

Contains information for casual readers as well as full text or abstracts from major reports.

Includes information on plants and animals, invasive species, Minnesota ecosystems, and more.

Provides facts about environment-related diseases and health risks, news and events, the National Toxicology Program, and much more.

The online National Library for the Environment contains seven free information resources: hundreds of up-to-date issue reports, environmental education programs and resources; environmental laws including local, state, federal and international; an in-depth resource on Population-Environment linkages; a virtual library of Ecology and Biodiversity; information on environmental conferences and meetings; and Environmental Careers and Jobs.

Contains authoritative conservation information on more than 50,000 plants, animals, and ecological communities of the United States and Canada. NatureServe provides in-depth information on rare and endangered species as well as common plants and animals.

Provides the most up-do-date information about the status of threatened and endangered animals.

Highlights sites around the world undergoing dramatic environmental changes.

Features global news, emerging environmental problems, global environmental assessments, and climate data.

Science & Technology tab includes information on research programs, grants information, environmental databases, software download files, and technical documents.

An independent research institute devoted to global environmental concerns. Publishers of the annual State of the World and Vital Signs reports. Great source of research on environmental matters.