How does nostalgia for our past help us in our present?

There's a viral nostalgia trend at the moment with millions of people posting photos of themselves from a decade ago. So, what is it about today that's making us yearn for the past? And how much does it serve us to kick off 2026 with our heads in 2016? Psychologist Dr Carly Johnco and behavioural neuroscientist Dr Jee Hyun Kim on how to look back whilst also looking ahead. And, on Ask Aunty, columnist Kerri Sackville and broadcaster Paul Culliver weigh in on the politics of volunteering at your kid's canteen.