Algae and Cyanobacteria in Extreme Environments is a unique collection of essays, contributed by leading scientists from around the world, devoted to algae - and some related microbes - observed in unexpected harsh habitats, which it seems are an oasis or Garden of Eden for these organisms. This timely book on Extremophilic algae, including its especially impressive micrographs, may provide clues about the edges of life on Earth and possibly elsewhere...