Germán Sierra (A Coruña, 1960) is a professor of biochemistry and molecular biology at the University of Santiago de Compostela. He has published numerous essays and scientific articles on neuroscience. His literary work is made up of the collection of stories High voltage (Mondadori, 2004) and the novels the apparently lost space (Debate, 1996), happiness does not give money (Debate, 1999), Side effects (Debate, 2000) and Try using other words (Mondadori, 2009).