The Center for International Climate and Environmental Research conducst research and provides reports, information and expert advice about issues related to global climate change and climate policy. They have a searchable database of research articles.
Eco Voice provides access to up-to-date news and information on the environment, covering everything from renewable energy and sustainable building to natural living and organic agriculture.
Ecovian is an online green city guide for hundreds of U.S. cities that provides comprehensive sources of regional green living information. They also provide up to date calendars of upcoming green & environmental events.
Environment Online is a global virtual school and network for sustainable environmental development. Their website offers materials, activities and a network for teachers.
Natural Justice's site provides a library of resources related to environmental law and conservation issues.
Planet Earth Online, operated by the Natural Environment Research Council, provides daily news, blog posts, and podcasts on the latest scientific research in the fields of natural and environmental sciences.
SEI provides access to news, articles, tools and publications in the fields of environmental, developmental and social issues.