Book excerpt: In this updated reissue of their classic Homeopathy: A Frontier in Medical Science, Italian physicians Paolo Bellavite and Andrea Signorini thoroughly examine previous and current literature on the science of homeopathy in order to discover answers to the elemental questions about homeopathy. Bellavite and Signorini engage in a fascinating discussion of the biophysics of water, biological effects of electomagnetic fields, chaos theory, and fractals.