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Why did Emily Maitlis, the former Newsnight presenter, want to make eight programmes about an American official who died 50 years ago?

Roger Bolton asks her about her Radio 4 series which recounted the career of J Edgar Hoover, the man who made presidents tremble and became probably the most powerful non-elected official in the USA. Was he the ‘deep state’ personified?

Also, Dr Michael Moseley of Radio 4’s Just One Thing answers a critic who says his advice to eat more oily fish could come at a high environmental price.

And in a similar vein, should we be concerned about the future of peat bogs?

Presenter: Roger Bolton
Producer: Kate Dixon
Executive Producer: Samir Shah

A Juniper Connect production for ´óÏó´«Ã½ Radio 4