VOYAGERS' HEALTH-TECH JOURNEYS David Rowan

The humanitarian medical organisation Médecins Sans Frontières (MSF) is vast and decentralised – with operations in 70+ countries, 50,000 employees, and a $2B annual budget, mostly from millions of individual donors. Tyler Christie is helping MSF understand and cut its carbon output – not only because a crisis-response organisation needs to respond to a planetary crisis, but because it also makes good business sense. Tyler tells David Rowan on VOYAGERS' Journeys, the VOYAGERS community podcast, how other businesses can learn from the bottom-up, decentralised and investment-led approaches that are transforming MSF. Tyler is in the VOYAGERS Climate-Tech group. More at VOYAGERS.io

Nina Tandon hates that we replace our worn-out bones with metal and plastic. So her company Epibone is using nature's own "science fiction" to bio-cultivate bones from our own body's stem cells. The New York-based startup is now beginning human trials of its revolutionary bone-reconstruction technology – offering new hope to patients with bone loss from cancer, accidents or congenital defects. Nina is honest about the challenges in building a clinical business in a highly regulated field – but shares how her "SOS network" helps her navigate the tough moments. Nina is part of the VOYAGERS community of impact-driven people supporting each other.

First they built a smash-hit brain-training app, Peak Brain Training, with 60 million downloads and a host of app-store awards. But then Xavier Louis and Sylvain Piquet, two London-based Frenchmen who were running Peak Labs, decided there was a bigger problem to solve. What if they could take their skills in building cognitive-enhancement games to identify early, pre-symptom signs of Alzheimer's – and then, through an app, provide exercises and guidance that can delay its onset? In VOYAGERS' HEALTH-TECH JOURNEYS, they explain how SharpTx is tapping the latest clinical science to impact one of healthcare's greatest challenges. Xavier and Sylvain are part of the VOYAGERS community of impact-driven people supporting each other.

Proximie saves lives by sharing the world's best clinical practice – using tech to bringing the world's best surgeons live into operating theatres that might be thousands of miles away. Founder and CEO Nadine Hachach-Haram still works as a NHS reconstructive surgeon – a challenging act of time management as she steers a fast-growing 100-person company. Nadine is part of the VOYAGERS community of impact-driven people supporting each other.