The always entertaining Richard Hoagland directs his paranoid creativity to the avatars of the mediterranean gods, the planets of the solar system. In this delightful fancy, he gathers the threads of evidence to produce the brilliant theory that the Saturnian moon Iapetus is the decaying remnant of a vehicle which delivered the seeds of life to Earth more than 2 billion years ago. I was quite entertained to learn that Francis Crick proposed panspermia as a means of dealing with the impossibility of an evolutionary account of native origin for life on Earth. (Original sources yet to be checked, mind you.)