Matthew Bannister on Peter Betts, who was the UK’s lead negotiator at international climate change summits.

Audrey Salkeld, the mountaineering historian best known for her work on the ill-fated Mallory and Irvine expedition.

Heather Rogers KC, the lawyer who championed freedom of speech in many high profile cases

Louise Meriwether, the author and journalist whose acclaimed novel “Daddy was a Number Runner” told the story of her childhood during the depression in Harlem.

Interviewee: Fiona MacGregor

Reading extract by: Susan Abebe

Producer: Gareth Nelson-Davies

Archive used:

News report following 2009 United Nations Climate Change Conference, Copenhagen, BBC News, 12/19/2009; News report, The Paris Agreement, UN Climate Change Conference (COP21), BBC News, 13/12/2015; Pete Betts interview, 194: Making a Difference, Outrage + Optimism podcast, Outrage + Optimism Ltd, uploaded 30/03/2023; Spycatcher ruling, Newsnight, BBC Two, 13/10/1988; David Irving, HardTalk, BBC News, 28/04/2000; Denial - official movie promo, IMDB, uploaded 2016; Louise Meriwether Lecture, Lectures to the Black Experience in the Arts course, University of Connecticut 14/03/1972;