The study of cyanobacteria (blue-green algae) has attracted attention in recent times because of its increasing importance in agriculture, environmental conservation, pollution control, waste reclamation, human nutrition, pharmaceutical industry, and in the production of value-added products of commercial importance. The twin characters of cyanobacteria - as a prokaryotic genome and organization on one hand, and as a eukaryotic oxygen-evolving photosynthetic system on the other, make them excellent candidates for molecular biological and biotechnological investigations and manipulations. In some countries, cyanobacterial biomass production has assumed industrial dimensions and is used for the production of value-added products. This volume comprises select papers presented at the International Symposium on Cyanobacterial Biotechnology - the section headings: biotechnology and molecular biology; cell biology and physiology; biofertilizer; food, feed and pharmaceuticals and biodiversity and environment. This volume should be useful to all those interested in understanding and using cyanobacteria for the benefit of mankind.