Dr Lachlan McIver grew up in the small rural Queensland town of Millaa Millaa. A family tragedy led him to a career in medicine, and medicine has since taken him on a journey from working in Queensland hospitals to some of the most remote and underprivileged countries around the world. Lachlan is now in Geneva as the Tropical Diseases and Planetary Health Advisor for Doctors without Borders. We spoke with Lachlan about his journey from Millaa Millaa to Switzerland, and, on the back of the Senate’s climate change meeting, about his drive to make a difference to climate change and the impact it is having on human health.