Tim Radford is a freelance journalist. He was born in New Zealand in 1940 and educated at Sacred Heart College, Auckland. He joined the New Zealand Herald as a reporter at 16, and moved to the United Kingdom in 1961. Apart from a brief spell as a Whitehall information officer, he has spent all his life in weekly, evening or daily newspapers. He worked for The Guardian for 32 years, becoming – among other things – letters editor, arts editor, literary editor and science editor. He won the Association of British Science Writers award for science writer of the year four times. He has lectured, or taken part in debates about, science and the media around the world as well as in Britain. He has also written for The Lancet, New Scientist, the London Review of Books and many other journals. He has written one book – The Crisis of Life On Earth  (1990) - and edited two books of science writing for the Guardian.  He is married with two children and one grandchild.

David Buckland is a designer, artist, film maker, and campaigner, whose photo based works have been exhibited in numerous galleries in London, Paris and New York. His works have been collected by the National Portrait Gallery, London, the Centre Georges Pompidou, Paris, the Metropolitan Museum, New York and the Getty Collection, Los Angeles amongst others. Five books of his photographs have been published. Since 2001, he has created and now directs the Cape Farewell project, whose ambition is to bring artists, scientists and educators together to collectively address and raise awareness about climate change. They have recently completed three very successful expeditions into the High Arctic which have been the subject of a film for ‘The Culture Show’, and a documentary, "Art from the Arctic", for the BBC.

Pallab Ghosh is a science correspondent for BBC News. He reports on developments in science, technology, medicine and environment for programmes including The Ten O’clock News, The Today Programme, Newsnight and News 24. He is a former Chair of the Association of British Science Writers.His awards include Technology Journalist of the Year and the Media Natura Environment Award.

Ole Didrik Laerum, gained his MD and PhD in the 60s from University of Oslo. Since 1974, he is professor of pathology at University of Bergen. He was Deputy Vice Chancellor University of Bergen 1984-89 and Vice Chancellor 1990-96. Ole was also Chairman of the board, Norwegian Research Council 1992-94. His research areas include cancer of the skin, brain and gastrointestinal tract, in addition to biological rhythms and regulation of cell proliferation. He has written 400 articles and written or edited 26 books on cancer research and popular scientific topics, including on scientific fraud.