Spike Lee is making a movie about a scientific pioneer who is building a time machine. Lee has bought the film rights to physicist Ronald Mallett's memoir, which tells the tale of his lifelong quest to create a workable means to travel through time. Mallett, 63, became obsessed with the subject as a 10-year-old, following the death of his father. Lee describes the project as a "fantastic story on many levels and also a father and son saga of loss and love".