Risto Isomäki (b. 1961) is a writer, science journalist and leading expert on environmental threats. His science fiction novel The Sands of Sarasvati was nominated for the Finlandia Prize and won the Tähtivaeltaja Prize in 2005. It has been translated into 10 languages. Isomäki is a well-known environmental activist who has published many non-fiction books about environmental responsibility, development corporation, and developing nations. In 2009 Isomäki was awarded the Warelius Prize from the Finnish Association of Non-Fiction Writers.