Thousands of spectators at a purpose-built complex in Las Vegas are about to watch something that's never happened before. The Enhanced Games will see 40 athletes attempting to break human records by pumping their bodies full of performance-enhancing drugs. Powerlifting coach Gus Cooke and researchers Matthew Dunn and Adam Karg examine how the Games could change sport and science as we know it.Imagine being caught in a cycle where every 29 days, you transform into an angry, weepy, out-of-control mess. Then suddenly, it passes. This is how author Emma Hardy describes living with premenstrual dysphoric disorder. She joins psychiatrist Jayashri Kulkarni to explain the complex reality of living with PMDD.Twenty-three species of dinosaur have been discovered in Australia and 70 per cent of those were found by the public. Palaeontologist Sally Hurst explains what you should do if you find a fossil.