Seriously...

The Great Replacement is an idea fueling far-right recruitment around the world - the idea that white communities and culture are being purposely replaced by non-white migrants. Many far-right terrorists have referenced this theory as the driving force behind their murderous actions - but where does this idea originate from, and how seriously should we be taking its proliferation here in the UK? Terrorism expert Raffaello Pantucci explores the roots of the Great Replacement and asks if this is just a far-right conspiracy theory as some critics claim, or is there a kernel of truth reflected in the UK's changing demography?If so, how are communities - and the government - managing this change? Immigration is often a difficult topic of public debate, with many people concerned that any questioning of immigration policy will label them as racist.But if we can’t talk more openly, without fear of judgement, are we at risk of handing control of the immigration narrative to extremists? Reporter: Raffaello Pantucci,

Historian Catherine Merridale witnessed the birth of Memorial in 1989 as the Soviet Union died. An organisation devoted to recovering the past of the Soviet Gulag and soon documenting the new transgressions of the Russian state and its imperial wars. Even as Russia wnet to war against Ukraine it sought to close Memorial down, silence its voice and reshape history. But months after the invasion Memorial shared in the Nobel Peace Prize, only adding to the Russian government's ire. It has closed its archives and offices and pursued leading figures in Russian Memorial through the courts, declaring them responsible for 'rehabilitating Nazism'. Merridale tells a personal story of the opening of history that Memorial was essential to and the tragedy of its closing and the closing of the past. The Kremlin's current occupants are no more willing to consider the victims of state repression - largely Stalin's repression - than their Soviet predecessors were. The story of Memorial, the association, established in 1989, t

In 1997 a freak wave washed 62 containers into the sea off a cargo ship near the coast of Cornwall. Inside one were five million pieces of Lego. By a strange quirk of fate, many of the Lego pieces had a sea theme. This is the story of the community of beachcombers trying to track down the miniature octopuses, scuba tanks, life rafts, flippers, sharks and some very rare green dragons still washing ashore today. Beachcomber Tracey Williams set up the social media account Lego Lost At Sea, allowing people to share their finds. She leads BBC reporter Robin Markwell on a journey around the Cornish coastline looking for the tiny toys. On the way they meet fishermen still bringing up Lego in their nets, families brought together by dragon-hunting and an artist making sculptures out of millions of pieces of microplastic. Lego Overboard is a tale about the joys of treasure-hunting with a serious message about the long-lasting legacy of plastic pollution in our seas.Producer: Robin Markwell for BBC Audio in Bristol

Two decades ago Da Vinci Code mania gripped the world. But the story behind the theory that Jesus Christ had a secret bloodline is more surprising than any thriller. Step aside Indiana Jones and Robert Langdon - BBC Paris Correspondent Hugh Schofield heads to the South of France to uncover a forgotten milestone of broadcasting which helped set the template for the modern conspiracy theory. The Lost Treasure of Jerusalem was a 1972 episode of the BBC history series Chronicle. It sets out the unusual local mystery of Rennes-le-Château - and the charismatic parish priest who somehow funded a major church renovation. What treasure had he uncovered? Written by and featuring the actor-turned writer Henry Lincoln, the programme was a phenomenon. The idea that the church was decorated with symbols and clues hinting at the origin of the unexplained wealth gripped viewers and led to two follow-up programmes. But Lincoln's research for the programmes became the keystone of the book The Holy Blood and the Holy Grail - po

Dr Kat Arney explores cancer through the lens of evolution. Why do we get cancer? In this episode we find out that far from being a new disease, cancer is embedded deep in almost every branch of the tree of life, from the very earliest organisms through to today, and in most species from aardwolves to zebras. Kat explores how the origins of cancer are inseparable from the history of life itself, with the help of some ancient mummies, cheating amoebas, lazy bees and naked mole rats. Produced for BBC Audio Bristol by Beth Sagar-Fenton Edited by Chris Ledgard

Emily Knight lives with five housemates. One of them is her partner. But this isn't a student house-share. They are all in their 30s, have no plans to break up the group, and Emily can't imagine life without them all. So could the rest of her life be built on these friendships? Traditionally life's big chapters - housebuying, raising kids, retiring - are seen as things you probably do with a romantic partner. In BFFs, Emily meets people from across the UK doing things differently, and asks if a life built on friendship can really work. In Greater Manchester she meets Sam and Sean, renovating the three-bedroom house they bought together last year. Sandra and Lisa reflect on raising their daughters as two single mums together in Hull. In Colchester, Andy, Anne and Barbara are three members of a bigger group of friends living in a co-housing settlement. For them, friendship is a way of guarding against loneliness as they get older. And from the United States, Emily hears about the developing concept of "platonic

Anxiety is the most common form of mental illness in the UK, with nearly a fifth of people experiencing it over the course of a year. Although it is often treated through medication, there are many alternative ways which are proving to be very effective in reducing anxiety amongst some people. In this series, we explore how connecting with the elemental forces of nature helps people with a range of mental illnesses to feel better. We also learn about the current academic research behind these methods.In Episode 1 - Fire - we visit an overnight camp on the banks of the River Spey near Aviemore in the Scottish Highlands run by the charity Fire and Peace. According to the participants, - who have a range of mental ill health and addiction issues - the experience of spending time around the fire in nature is transformative when it comes to promoting feelings of connection and wellbeing. We also hear new research which shows how being around a campfire can be calming.Produced and Presented by Helen Needham Researc

Sheep have been instrumental in creating some of the UK’s most iconic upland landscapes – from the sweeping fells of the Lake District, to the moors of Devon and Cornwall. These humble animals have left their mark on our language, our place names and even our architecture. But upland sheep are under fire. As the farm subsidy system changes post Brexit, it’s getting harder to make money out of them. The wool is now less than profitable, and lamb consumption has decreased. Meanwhile, sheep are being criticised by many environmentalists, who say they have degraded upland habitats. In this programme, Charlotte Smith travels from Dartmoor to North Wales, exploring the places and meeting the people who have been formed by sheep…and asking what their future holds. What is the trouble with sheep? Answers range from being picky eaters, to getting bad press! Produced for BBC Audio in Bristol by Heather Simons

As a deadly new virus starts spreading in Wuhan, China, so do rumours about a lab there. In the remote, jungle-covered hills of China’s far-southwestern Yunnan Province, teams of scientists have spent years intensively researching one animal: bats. The scientists are virus hunters, trying to better understand and mitigate the threat of new viruses jumping from bats to other animals and humans, potentially setting off a pandemic. Their samples of bat droppings are brought back to labs, including the Wuhan Institute of Virology. So when a new coronavirus begins killing people in that same city, questions are raised about whether the people trying to stop a pandemic could’ve accidentally triggered one.Archive: CBS; The White House; NPR; CGTN; NBC.Presenter: John Sudworth Series producer: Simon Maybin Editor: Richard Vadon Sound design and mix: James Beard Commissioning editor: Dan Clarke Science advice: Julian Siddle and Victoria Gill Extra production: Eva Artesona and Kathy Long Research support: Zisheng Xu

Tales of a bipedal ape-like creature persist in the myth and legend of the Himalayas. But does the yeti really exist? Two enthusiasts are determined to find out. Andrew Benfield and Richard Horsey begin their search in the north-east Indian state of Arunachal Pradesh. Speaking to villagers and yak herders, they hear multiple accounts of yeti sightings. Will they find the evidence they need to prove the creature is real? Producer: Joanna Jolly. Executive Producer: Kirsten Lass. Sound designers: Peregrine Andrews and Dan King. Composer of original music: Marisa Cornford. Assistant Producer Maia Miller- Lewis. A Loftus Media production for BBC Radio 4

The free movement of people from the EU has ended, but immigration has reached record levels. Former Brussels correspondent, Adam Fleming, charts how Britain’s workplaces and universities have changed as a result of Brexit, and learns from seasonal workers about the art of picking asparagus. Producers: Sally Abrahams and Diane Richardson Production Co-ordinator: Janet Staples Editor: China Collins Sound engineer: James Beard

Fair fashion campaigner and influencer Venetia La Manna sets out to discover how the ways we produce, consume and value furniture have transformed over recent decades, and what that means for our homes and the planet. From the comfort of our sofas, it’s a giant footprint and a major waste category that many of us are barely aware of. And with diminishing quality feeding our throwaway mindset, are we beginning to get stuck in a perpetual cycle? Venetia finds out how we got here and explores the nuanced reasons we turn to fast options – out of both choice and necessity, from the influence of social media to the housing crisis. We hear about the turning tide towards second hand furniture and the growing reuse market, and ask pioneering homewares giant IKEA about their sustainability strategy. If we act now, can fast furniture slow down before it’s too late? With contributions from design historian Deborah Sugg Ryan, sustainable consumption expert Tim Cooper, TrendBible’s Home and Interiors Editor Wendy Lowe, cul

Robert and Jennifer Beckford are married and agree on most things - apart from one issue; was the Windrush Generation better off after coming here or should they have stayed in the Caribbean? And ultimately, whether they should take their teenage children to live in Jamaica. The question is simple, but the arguments are complex and multi-layered, but what about the consequences for the Beckfords? Robert feels that moving to the UK for the Windrush Generation was an overwhelmingly good thing and that they should be seen as pioneers, who broke frontiers. . Jennifer disagrees, the Windrush migrants would have been better off going back to the Caribbean and using their skills to help re-build their own countries. To make amends she wants to take her family to Jamaica for a new life there, something Robert can't fathom. This authentic argument is the driver for a critical examination of the legacy of Windrush 75 years since it docked at Tilbury. Each episode will examine a different key quality of life indicator t

As the government prepares a major reorganisation of Britain's railways, Daniel Brittain asks what are they for. It's a question which has been ignored in previous reorganisations - which typically take place after a crisis or a disaster. So Daniel travels to Greater Manchester, meeting people on trains, people who want to be on trains, and those who run the railways, to understand how the rail industry has changed, and what its place in Britain's society, economy and culture might be in the future. Producer: Giles Edwards.

Norwegian jazz musician Jon Larsen was having breakfast one clear spring morning when he noticed a tiny black speck land on his clean, white table. With no wind, birds or planes in sight, he wondered if it fell from space.Dust from space isn’t as fanciful as it sounds. Billions of microscopic meteorites, dating back to the birth of our solar system, fall onto Earth every year. But they are so tiny, hidden among the copious dust of everyday life, that scientists believe they are impossible to find outside ultra clean environments like Antarctica. But this doesn’t deter Jon, who, against the advice of all experts, decides he is going to be the first person to find an urban micrometeorite.He takes presenter Caroline Steel and planetary scientist Dr Matthew Genge up onto some roofs, in search of the elusive particles. Can we find stardust on the top of the BBC?Featuring Jon Larsen, Dr Matthew Genge (Imperial College London) and Svein Aarbostad. Presenter: Caroline Steel Producer: Cathy Edwards and Caroline Stee

When 8 year old Kim Gordon set off for China in 1965, it set in train a tale of passion, imagination and still unanswered questions. Kim’s parents were committed communists in the thick of Mao’s cultural revolution. Kim became a Red Guard, one of an army of children and teenagers marshalled in support of Mao and he had a ringside view of the vast rallies in Tiananmen Square. But when the political tide turned against foreigners, the family was imprisoned for two years in a tiny hotel room, Room 421. The Gordon family had no contact with the outside world for two years and their families back in Britain had no idea where they were. With only a block of paper and a wild imagination for company Kim passed the time by writing letters that could never be sent, and thrilling plays which he’d act aloud playing all the parts himself. His story reveals much about families and loyalties; on the grip of ideology; and the ingenuity of a child shut in an empty room. A rich and strange reminiscence not just of China but of

25 years since the people of both Northern Ireland and the Republic voted to accept the Good Friday Agreement, another potential referendum looms on the distant horizon. That Agreement, though primarily to end the violence of the Troubles, allows for a future border poll that would determine whether Northern Ireland remained part of the United Kingdom, or re-joined the south. But crucially, few people realise that it’s not just up to Northern Ireland voters: consent is required on both sides of the border. And for voters in the Republic, it’s more complicated than you might think. Andrea Catherwood investigates what the new, highly-educated, liberal, European-focused Irish Republic thinks about the possibility of its northern neighbours, from whom they were parted more than 100 years ago, re-joining their country. Polls suggest a number of issues; symbols, violence, economics. Can Ireland afford it, and does it want to? Is it just too much trouble? With contributions from the main Irish political parties, as

We've been building computers to think like us for years, but our ability to replicate human senses has been impossible. Until now. This technological revolution is starting to profoundly change not only how we interact with the world around us, but is allowing us to see, hear, smell, taste and even touch things we never imagined possible before. An Artificial Intelligence revolution is super-charging sensing technology, promising us eyes with laser precision, ears that can distinguish every sound in a mile's radius and noses than can sniff out the early signs of forest fires before the first flame forms.Evolutionary biologist and broadcaster Prof. Ben Garrod, is off to meet some of these sensory innovators and technological pioneers. The archaeologists, ecologists and medics, who are turning our world upside down and inside out. In episode one, Ben tries seeing further. The visible world to us is tiny, and we are able to detect just a fraction of the light spectrum that is out there. But new technology is pu

In a special episode to mark Mental Health Awareness Week, writer Horatio Clare and psychiatrist Femi Oyebode consider the purpose of anxiety, and how it can manifest in different ways. They look at where it comes from, and hear from firefighter Jonny about his journey with panic attacks and his techniques for coping with them.

You can buy almost everything on social media – how about a British dad for your child? A year long BBC investigation has uncovered a brazen illegal immigration scam in which pregnant migrant women who are in the UK without a visa are paying British men thousands of pounds to pose as fathers to their children. The women gain British citizenship for their child, which means they may be able to get the right to remain themselves. The fake fathers receive hefty sums of money. And a network of criminal 'fixers' and translators are also cashing in. Divya Talwar reports.