Johan Eklöf, PhD, is a Swedish bat scientist and writer, most known for his work on microbat vision and more recently, light pollution. He lives in the west of Sweden, where he works as a conservationist and copywriter. Eklöf has studied bats for almost twenty years and now has his own consultancy company, hired by authorities, wind companies, municipalities, city planners, and environmental organizations as an expert on bats, night ecology, and nature friendly lighting. The Darkness Manifesto is his second book to be translated into English.