In a world of hyper-connectivity and social media, why do so many of us feel so damn lonely? Being lonely isn’t the same as being alone, and some people love their solitude. But loneliness is widespread, growing, affects all ages, and seriously sucks for your physical and mental health. Why are we so ashamed to talk about it, and what can help? Four guests join Big Ideas host Natasha Mitchell for a frank, fearless and moving conversation about a very modern challenge.