Your letters.

Editor's pick Mare vegan food please, but less processed fake meat 28 January, p 13 From Erik Foxcroft, St Albans, Hertfordshire, UK I agree that reducing the amount of meat served in schools and other institutions would be good for the planet and could lead to changes in eating habits. Tune in to the Echo of Eternity if you dare 31 December 2022, p 46 From Patrick Gaydecki, professor of digital signal processing, University of Manchester, UK Your feature on the use of soniflcation to reveal the sounds of space was intriguing. It was impractical to ensure adequate heat-processing of the waste meat and the practice was later banned, but not before a consequent condition called variant Creutzfeldt-Jakob disease (vCJD) emerged in people due to infected meat. [Extracted from the article]