Dr Gavin Schmidt is a climatologist and Director of the NASA Goddard Institute for Space Studies, one of the world’s top climate research organisations. He is only the third person to hold this post for NASA, having taken on the role from James Hansen – the “father of climate change awareness”. Gavin’s work focuses on understanding past, present and future climate change and on the development and evaluation of climate models, and he has written over 120 publications that specialise in simulations of the past, present and future. Scientific American cited him, as one of the 50 Research Leaders of 2004, and his 2014 TED talk on climate modelling has been viewed over one million times. While Gavin proposes that climate models are skilful, he advocates that what’s most important is for us to “get off our carbon diet”.