Stories: - Decoding the Risks: At-home genetic test kits now promise to predict your risk of disease before it strikes. - Exoskeleton: Mark Horstman test drives a revolutionary robotic exoskeleton which is designed to give mobility back to people paralysed by spinal injuries or disabled by disease. - Cats Purr: Jonica Newby enlists the help of cat owners and their purr-fect felines to help demonstrate what scientists have recently discovered about the humble purr. - Sydney Transit of Venus: Mark Horstman and Graham Phillips explore the excitement and importance of the last Transit of Venus in the century.