Felicity Finch reports on a pioneering project that sees members of the Royal Philharmonic Orchestra working alongside inmates in HMP Norwich. The aim is to workshop, draft and perform personal songs that will help establish a bond between offenders and their children.

A lullaby is the most immediate of musical forms. The singer is a parent, the audience a child. The communication is intimate and helps form intangible bonds. A reality of prison life is that those bonds are, to a great or lesser extent, broken. The Lullaby Project, run by the Irene Taylor Trust, is an attempt to create all the positives of that parental link, without undermining the reality of prison life.

Felicity has been given unique access through the Irene Taylor Trust, to follow their artistic director Sara Lee. Sara and a group of musicians made three visits to Norwich prison to help the inmates write lyrics and work on ideas for melodies and rhythms that will result in lullabies that can be recorded. The process is rewarding in itself, but it also encourages inmates to reflect on the nature of their relationship with their children, and how they would like to be perceived by them.

Similar projects have been tried in both the USA and the UK, but following the pilot this is the first time the media has been given access to the process.

How a simple DNA test turned a world upside down, leading to profound questions of identity. When 71-year-old Philip was given a genetic testing kit for Christmas, he assumed he would stumble across an ancient line of nobility or a novel identity to latch onto. Instead, he found himself unravelling a mystery with more twists and turns than a spiralling strand of DNA. David Reid meets an extraordinary group of people who sent in DNA samples and tested negative to the question: “Who am I?” Join them on a moving, funny and thought-provoking journey as they dig through layers of family myth and secrecy to unearth the incredible story of their origins. Produced and presented by David Reid Editor: Hugh Levinson Production Coordinator: Jacqui Johnson Sound: Tom Brignell

80 years after female conscription, the final few tell their extraordinary World War Two stories as part of the ATS. By war's end, 290,000 women of all backgrounds had served in the Auxiliary Territorial Service. It may have had a less glamorous image than its naval and air force counterparts but the ATS was by far the biggest military service for women. Initially the ATS had a reputation for dull demeaning work. That changed in 1941. In December of that year, for the first time in British history, young single women had to join Britain's war effort. Their choice of jobs expanded dramatically. Dr Tessa Dunlop unpacks some of the controversies that accompanied putting girls, en masse, into military uniform. With a rich cast of veterans she examines the impact and legacy of Britain's female army. Class, comrades, conflict, loss, love, work - for a generation of young women military service was life-changing. Presenter: Dr. Tessa Dunlop Producer: John Murphy Archive in the programme from BFI National Archive and British Pathe

At the start of 2021 and the implementation of Brexit, a trade border was created between Great Britain and Northern Ireland. What does this mean for ordinary people who cross the Irish Sea? And where exactly is this border anyway? Neil McCarthy boards Stena Line's ferry 'Embla" which plies a daily and nightly course between Birkenhead and Belfast. He talks to passengers, and crew, lorry drivers and historians, crossing this body of water that both separates and binds the two islands on a search for the elusive line in the water. 'Meridians' written and read by Mark Ward Sound design by Phil Channell Produced and presented by Neil McCarthy

100 years ago the Anglo-Irish Treaty was signed, bringing to a formal end the Irish War of Independence and ending centuries of British colonial control. During the war members of the IRA were pitted against the Royal Irish Constabulary, the British Army and the notorious Black and Tans and Auxiliaries. It's a story of divided loyalties and the unresolved traumas of war, with resonance today as Britain and Ireland struggle to address the legacy of the more recent violence of the Troubles in Northern Ireland. In an investigation into the fate of one man, James Kane, the River Man, executed by the IRA a century ago, by men he knew and who liked him, Fergal Keane explores some of these issues. Why did they kill him and what were the consequences for his family and his executioners? Producer: John Murphy

Will Self tells the story of his black bin bag... from his back door... to its final destination. It's the story of a modern-day dump - an extraordinary, alien, nauseating world - where, instead of being buried, the rubbish will go up in smoke. Voices of waste workers intermingle with the rubbish in a go-round of garbage, scored by Jon Nicholls. There are the bin men who believe 'you just gotta get in the groove' as they walk ten miles a day, to 'pick up a bit of crap, sling it in the back of the lorry and take it down the dump'. There's the weighbridge clerk at the sorting facility taking pride in separating the 'sheepy recycling from the goatish garbage' to load it onto enormous steel containers. Boatmen on the Thames steer these huge barges, bright orange in colour, past the great landmarks of London in 'a cockney pas-de-deux danced with detritus'. Downriver, the bag arrives at its destination - a giant industrial incinerator where ten thousand tonnes of waste are going up in flames, at temperatures of 850 degrees. 'Some people are mesmerized by it', we hear. Will's black bag meets its 'fiery and apocalyptic end'. It's a raw, unnerving look at our relationship with our waste. Sound designer: Jon Nicholls Producer: Adele Armstrong

Regenerative Farming is gaining traction around the world as a means of increasing biodiversity, improving soil quality, sequestering carbon, restoring watersheds and enhancing the ecosystems of farms. The shepherd James Rebanks, author of English Pastoral, is on a quest to find out if it is possible to adopt these methods on his farm in the Lake District. He meets leading proponents of these methods in the UK, US and Europe and discovers how mimicking natural herd movements, stopping ploughing and adding costly chemicals could make his farm economically sustainable.

This is becoming an urgent question as not only is the global population projected to rise to nearly 10 billion by 2050 but according to the UN's Food and Agriculture organisation within 60 years we may literally no longer have enough arable topsoil to feed ourselves. Meanwhile our reliance on meat products is being blamed for increasing CO2 and climate change.

But can James,and indeed other farmers, make the switch to these techniques when industrial farming has been the paradigm for so long? When so many people believe turning vegan and shifting to plant-based ecological farming is the way forward, should he continue breeding sheep and cows? And as companies like Nestle, Walmart, Unilever, McCain and Pepsi all pledge to invest in regenerative farming to reduce their greenhouse gas emissions, do the claims about carbon sequestration stand up? How can he use his farm to save the planet?

Horatio Clare examines how the pioneering writer Jan Morris authored her own life, from her nationality to her sexual identity, trying to get behind the myths and masks she created.

Jan Morris wrote more than fifty books but also constructed her life to a degree rarely seen in one individual. She created a glittering career, invented a writing style, chose her nationality and most famously, transitioned. Horatio talks to Michael Palin, travel writer Sara Wheeler, and Jan's biographer Paul Clements, and visits Jan's home in North Wales to meet her son Twm Morys. Hearing interviews she recorded throughout her long life, he attempts to find out who Jan Morris really was.

James - as she was then - Morris knew from a very young age both that he was in the wrong body and that he wanted to be a writer. Through a combination of self-confidence, determination and what Jan herself describes as her ‘insufferable ambition’, she achieved what she set out to, becoming one of the most successful journalists of her generation and then a world-famous author of books about places like Venice, Oxford, Trieste and Manhattan, which re-invented travel writing.

At the same time as these professional and literary achievements, however, Jan was also undergoing a deep crisis of personal identity. In one of her books, Conundrum, she described how the conviction she’d had as a child that she was in the wrong body had never left her, but by her thirties she was in despair and had even considered killing herself. Conundrum describes how she succeeded in making the transition from man to woman in 1972. She said the sex change brought her the happiness she’d always sought. She also claimed that her decision had made little impact on the happiness of her four children, but that claim is put to the test in the programme.

Michael Palin talks about the Jan Morris he met - witty, generous and inspirational, but also a challenging interviewee who used a variety of techniques to deflect difficult questions about her private life. Paul Clements suggests she 'played hide and seek with the facts'. Archive on Four considers how much she constructed and presented her whole life, with determination, guile and skill.

Produced by Gareth Jones for BBC Wales

Twenty years ago - in the mind-numbing aftermath of the terrorist attacks on America - the immediate, mind-numbing response of the media was to ban laughter. All laughter, including jokes, chuckles and guffaws. This is the story of what happened next. With contributions from Private Eye to The Onion, via David Letterman, the News Quiz and Have I Got News for You. As well as 9/11 and the death of Bin Laden, Joe Queenan explores the pandemic and the US retreat from Afghanistan.

"What a year 2021 has been – from the storming of the capitol in Washington to the fall of Kabul to the Taliban, this has not been a good time in the US. Probably not so great in the UK either. Throw in some riots, add in the climate crisis and the plague – none of this is worth the slightest lame joke. But is it worth a good joke?"

With contributions from three US presidents, plus Ian Hislop and Adam MacQueen from Private Eye, Armando Iannuci (creator of The Death of Stalin), Susan Morrison of the New Yorker, and Robert Siegal editor of The Onion in 2001 - the first US publication to break the laughter ban with the headline, US Vows To Defeat Whoever It Is We Are At War With. A copy of that magazine is now in the Library of Congress.

Also includes archive from David Letterman, Linda Grant, Michael Rosen, Rich Hall on Have I Got News for You, plus the News Quiz from September 2001.

Joe Queenan is an Emmy Award-winning US broadcaster. His previous contributions to Archive on Four include Brief Histories on Blame, Shame and Failure.

The producer for BBC Audio in Bristol is Miles Warde.

Who was behind the 2009 hack and leak of emails that fuelled climate change sceptics?

Gordon Corera tracks down some of the sceptics engaged in a long-running battle with the climate scientists over data, and he considers the legacy of the events of 2009.

Producer: Sally Abrahams