Professor Georgina Mace is Head of the Centre for Biodiversity and Environment Research at University College London. Her research interests are in the assessment of extinction risk and measuring the trends and consequences of biodiversity loss and change. She led the process to develop, test and document criteria for listing species on IUCN’s Red List of threatened species, and subsequently worked on the biodiversity elements of the Millennium Ecosystem Assessment and the technical development of measures for the CBD 2010 target. She recently contributed to the UK National Ecosystem Assessment and the IPCC 2014 Working Group 2 chapter on the impacts of climate change on ecosystems. From 2000 to 2006 she was Director or Science at the Zoological Society of London. In 2006 she moved to Imperial College London as Director of the NERC Centre for Population Biology. She was awarded a CBE in 2007, elected FRS in 2002, and was the 2007 winner of the international Cosmos prize. She has been President of the British Ecological Society (2011-2013), President of the Society for Conservation Biology (2007-2009) and Chair of the international programme on biodiversity science DIVERSITAS (2012-2014).