Science commentator Dr Jen Martin joins Kathryn to talk about a new study into how ChatGPT is changing our everyday language - have you found yourself using 'delve' more? The largest-ever study into how nighttime light affects heart health has found the more you're exposed to a night, the higher your risk of heart disease. And are left-hand people really brilliant creatives? Or is it just that both are rare? Dr Jen Martin founded the science communication program at the University of Melbourne, runs the espressoscience.com blog and is also the author of Why Am I Like This?: The Science Behind Your Weirdest Thoughts and Habits.