Britannica.com has a religions page that provides educational resources and information on religion.

Brant Rosen is rabbi of Jewish Reconstructionist Congregation in Evanston, Ill. The congregation rebuilt its building to make it sustainable and moved back into it in February 2008.

Ellen Bernstein is founder of Shomrei Adamah, the first national Jewish environmental organization, founded in 1988.  She is author of The Splendor of Creation: A Biblical Ecology and numerous articles on Judaism and ecology.  She teaches at Hebrew College in Newton, Mass., and consults in the area of religion and ecology.

Katy Z. Allen is rabbi of Ma’yan Tikvah, a “congregation without walls” in the Boston area that connects Judaism to nature and social justice.

Jamie Korngold is the Adventure Rabbi and author of God in the Wilderness: Rediscovering the Spirituality of the Great Outdoors With the Adventure Rabbi. She is based in Boulder, Colo.

The Isabella Freedman Jewish Retreat Center in Falls Village, Conn., is home to a number of environmental programs and an organic farm. Nigel Savage is the president and CEO.

The Jewish Farm School is a Philadelphia-based effort to create a Jewish way of working land.

Jewish Sacred Aging is an online forum offering resources to those dealing with aging-related issues. Rabbi Richard Address is founder and director.