Professor Julian Dowdeswell is Director of the Scott Polar Research Institute, University of Cambridge. He authored the foreword to ‘Blue Ice’ by Alex Bernasconi, published by Papadakis in 2016. Professor Michael J. Hambrey is Professor of Glaciology, Centre for Glaciology, Aberystwyth University, Wales. Michael’s research has yielded nearly 200 scientific papers, several edited books and a variety of books on glaciers and the Arctic for the wider public.