This book presents recent advances, challenges, and trends in modern microalgal biotechnology. It covers microalgae genetics, bioreactors, modeling, massive scale and industrial cultivation, and environmental, social, and economic aspects of microalgal biotechnology. The book also explores the emerging knowledge about high-value bioproducts from microalgae, e.g., biofuels, biosurfactants, bioremediation, bioplastics/biopolymers, pharmaceuticals, antioxidants (anti-aging), fatty acids, polysaccharides and proteins, feed and superfoods with microalgae. The chapters will be written by prominent professors and researchers from the six inhabited continents of the world, from academic to industrial sectors.