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Cal-Earth is a 501(c)3 non-profit/charitable foundation dedicated to research and education of the public in environmentally oriented arts and architecture. Its philosophy is based on the equilibrium of the natural elements of earth, water, air, and fire, and their unity at the service of the arts and humanity.

Cal-Earth’s research and educational work is founded by architect Nader Khalili (1936-2008) and continues his vision by teaching the Ceramics and Superadobe technologies and its useful application in the world. It continues to research the Earth Architecture principles and their tangible application in the spirit of Khalili’s philosophy and teachings.

Your contribution to Cal-Earth helps to support research and development, building projects, and helps to provide scholarships to workshop participants and apprentices.

If you are interested in making a non-monetary donation to the institute, please contact Cal-Earth at:
760-956-7533 or by email.

Donate online:

To make an online donation, please click the "Donate" button:

Donate by mail:

P.O. Box 1977
Claremont, CA 91711


Thanks to everyone who donated to our successful Indiegogo Campaign!
We raised $10,027 with your help!


Donate to Cal-Earth

get up and
do some good
for someone now
the universe will surely
safekeep your act
everyone has left his
belongings and is gone
you too
for what good
you've done


i asked my mentor
in our happy hours
the ins and outs
of this life
and far beyond
he said
your salvation
is on the way
when you try to take
people's pain away

(translation: Nader Khalili)


Cal-Earth Inc. / Geltaftan Foundation | Hesperia, California | Your Privacy | Contact Us
Superadobe technology (sandbag tubes and barbed wire) was designed and developed by architect Nader Khalili and Cal-Earth Institute, and engineered by P.J. Vittore. Superadobe is a patented system (U.S. patent #5,934,027) freely put at the service of humanity and the environment. Licensing is required for commercial use.
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