California Environmental Protection Agency  (CAL/EPA)	www.calepa.ca.gov
Cool It! A CO2 calculator to help you reduce and offset your personal CO2 emissions	www.cool-it.us
EcoPulse Environmental Consulting	www.eco-pulse.com
Flex Your Power	www.FYPower.org
Multi-State Working Group on Environmental Performance	www.mswg.org
Silicon Valley Leadership Group (SVLG)	www.svmg.org
Silicon Valley Environmental Partnership (SVEP)	www.svep.org
Sustainable Cities Network	www.sustainablecitiesnet.com
Sustainable Melbourne	www.sustainablemelbourne.com
United Nations Environment Pro	www.unep.net