John Michael Greer is an American writer and druid who writes on ecological overshoot, ecological economics, appropriate technology, oil depletion, societal collapse, ecocentrism, pantheism, and the occult.
Biography：John Michael Greer is an American writer and druid who writes on ecological overshoot, ecological economics, appropriate technology, oil depletion, societal collapse, ecocentrism, pantheism, and the occult.
