Marina is the Executive Director of the Lancet Countdown: Tracking Progress on Health and Climate Change, and Associate Professor at University College London. The Lancet Countdown is an independent and multi-disciplinary research collaboration between almost 100 academic centres around the world, and headquartered at University College London’s Institute for Global Health. Marina trained as a clinical biochemist in the University of Buenos Aires, Argentina, and holds a PhD in biomedical sciences from the University of Cambridge. Her research background spans from toxicology through to environmental health and climate change, and before joining the Lancet Countdown she carried out her research in the Instituto Tecnologico de Buenos Aires, the University of Cambridge, and the Francis Crick Institute in London, UK.