Professor Hugh Montgomery obtained a 1st class BSc (Cardiorespiratory Physiology/ Neuropharmacology) in 1984 and medical degree (1987) and MDRes in 1997. He’s a London consultant Intensivist, and Professor of Intensive Care Medicine at UCL where he directs the Centre for Human Health and Performance. He’s published >600 papers. He was a commissioner on two Lancet Commissions on Human Health/Climate Change, he co-chairs the Lancet Countdown. He was appointed London Leader by Greater London Authority; attended many of the international ‘COP’ negotiations; and leads the children’s climate education programme ‘Project Genie’. He now runs climate action non-profit Real Zero.