Gabrielle Walker is the co-author of The Hot Topic, which has been described by Al Gore as ‘a beacon of clarity in a world of misinformation’. After several years at the science journal Nature, and working as Features Editor of the New Scientist, she is now a presenter for BBC Radio and writes for many newspapers and magazines. She has written and commissioned in all areas of science and technology, from quantum computers to novel energy sources and the future of biotechnology. Her travels in search of new developments have taken her to all seven continents – including several stints at the South Pole. She has climbed trees in the Amazon rainforest, used a geological hammer to pull fresh lava from a volcano in Hawaii, and dodged icebergs sailing around Cape Horn. Her latest book is Antarctica: An Intimate Portrait of the World’s Most Mysterious Continent.