List of unsolved problems may refer to several notable conjectures or open problems in various academic fields: Natural sciences, engineering and medicine Unsolved problems in astronomy Unsolved problems in biology Unsolved problems in chemistry Unsolved problems in geoscience Unsolved problems in medicine Unsolved problems in neuroscience Unsolved problems in physicsMathematics, statistics and information sciences Unsolved problems in mathematics Unsolved problems in statistics Unsolved problems in computer science Unsolved problems in information theory...