Joanna Haigh is Professor of Atmospheric Physics at Imperial College London. Her scientific interests include radiative transfer in the atmosphere, climate modelling and radiative forcing of climate change. She has published widely on these topics in the scientific literature and also contributed to numerous items in the written and broadcast popular media. She has been Vice-President of the Royal Meteorological Society, Editor of the Quarterly Journal of the R.Met.S., a Lead Author on the Intergovernmental Panel on Climate Change and acted on many UK and international scientific panels. She is a Fellow of the Institute of Physics and of the R.Met.S. and in 2004 she received the Institute of Physics Charles Chree Medal and Prize for her work on solar variability and its effects on climate.