| geocities.com | Centre for Environment, Social & Economic Research (CESER) |
| montana.edu | Climate Change Research at Montana State University |
| aspeninst.org | The Aspen Institute |
| umn.edu | Biodiversity Bibliography |
| anzsee.org | Australia New Zealand Society for Ecological Economics |
| earthlink.net | Durable Economics |
| dieoff.org | Die Off |
| envirovaluation.org | Environmental Damage Valuation and Cost Benefit |
| alear.org | Latin American and Caribbean Association of Environmental and Resource Economist |
| needsandlimits.org | Economics of Needs and Limits |
United States , California , Brea