Welcome to the comprehensive Algaepedia on microalgae, including cyanobacteria, the photosynthetic all-rounders of our planet. The encyclopaedia offers a detailed knowledge base covering various aspects: from evolution, development and the history of research and industrial production to the photosynthesis process and the high value substances it contains and their impact on the environment and climate. Delve into their unique biology, the different species, the crucial roles they play in our ecosystems and the myriad ways they impact human life and industry. From their key role in the Earth’s oxygen and carbon cycle to their promising applications in pharmaceuticals, the food industry and wastewater treatment, the potential of microalgae is vast and impressive. So embark on this enlightening voyage of discovery into the amazing world of microalgae. Get excited about these tiny organisms that hold the key to some of the most pressing environmental and sustainability issues of our time.