A comprehensive overview of the organs and systems of the human organism, viewed as a dynamic whole.
Presents an integrated view of evolution as a dynamic process, based on the author's lifetime of biological research.
This unique book explores the captivating colors that appear in the atmosphere of the earth: coronas, glories, halos, rainbows, dawn and dusk.
Explores the connections between materialist research on the atom and Rudolf Steiner's spiritual science.