Editor's pick.

Climate action will only come with mass suffering Letters, 3 December From Denis Watkins, St Just in Roseland, Cornwall, UK Lloyd Timberlake accurately summarises why we "will not and cannot manage" the challenge of climate change: "We won't make major sacrifices for future generations." Details of first language may be lost forever 26 November, p 36 From Michael Swan, Chilton, Oxfordshire, UK Your article on the history of European and other languages was interesting and informative. For geothermal, the Tube offers a source of heat 29 October, p 16 From John Bainbridge, Ottawa, Ontario, Canada I can't help feeling that heating the UK with geothermal energy is just another misguided, silver-bullet solution. [Extracted from the article]