From the archive: Sewage sleuths: the men who revealed the slow, dirty death of Welsh and English rivers

We are raiding the Guardian long read archives to bring you some classic pieces from years past, with new introductions from the authors. This week, from 2022: A tide of effluent, broken laws and ruthless cuts is devastating the nation’s waterways. An academic and a detective have dredged up the truth of how it was allowed to happen – but will anything be done? By Oliver Bullough. Read by Peter Searles. Help support our independent journalism at theguardian.com/longreadpod

When Ian Foxley found evidence of corruption while working at a British company in Riyadh, he alerted the MoD. He didn’t know he’d stumbled upon one of its most closely guarded secrets By David Pegg. Read by Shane Zaza. Help support our independent journalism at theguardian.com/longreadpod

Alberto Varela claimed he wanted to use sacred plant medicine to free people’s minds. But as the organisation grew, his followers discovered a darker reality. By Sam Edwards. Read by Sid Sagar. Help support our independent journalism at theguardian.com/longreadpod

We are raiding the Guardian long read archives to bring you some classic pieces from years past, with new introductions from the authors. This week, from 2022: Germany has been forced to admit it was a terrible mistake to become so dependent on Russian oil and gas. So why did it happen? By Patrick Wintour. Read by Andrew McGregor. Help support our independent journalism at theguardian.com/longreadpod

Karin Kneissl made headlines around the world when she invited the Russian president to her wedding in 2018. Five years later, she moved to St Petersburg. The scandal revealed a dark truth about the ties between Vienna and Moscow By Amanda Coakley. Read by Avena Mansergh-Wallace. Help support our independent journalism at theguardian.com/longreadpod

The Victorians called it ‘pernicious vomiting of pregnancy’, but modern medicine has offered no end to the torture of hyperemesis gravidarum – until now. By Abi Stephenson. Read by Nicolette Chin. Help support our independent journalism at theguardian.com/longreadpod

We are raiding the Guardian long read archives to bring you some classic pieces from years past, with new introductions from the authors. This week, from 2021: From ultra-processed junk to failing supply chains and rocketing food poverty, there are serious problems with the way the UK eats. Will the government ever act? By Bee Wilson. Read by Elinor Coleman. Help support our independent journalism at theguardian.com/longreadpod

Philippa Barnes was a child when her family joined the Jesus Fellowship. As an adult, she helped expose the shocking scale of abuse it had perpetrated By Barbara Speed. Read by Robyn Addison. Help support our independent journalism at theguardian.com/longreadpod

Every Wednesday and Friday in August we will publish some of our favourite audio long reads of 2025, in case you missed them, with an introduction from the editorial team to explain why we’ve chosen it. This week, from June: he’s spent 24 hours immersed in slime, two days buried alive – and showered vast amounts of cash on lucky participants. But are MrBeast’s videos simply very savvy clickbait – or acts of avant garde genius? Written and read by Mark O’Connell. Help support our independent journalism at theguardian.com/longreadpod

Every Wednesday and Friday in August we will publish some of our favourite audio long reads of 2025, in case you missed them, with an introduction from the editorial team to explain why we’ve chosen it. This week, from January: doctors are pushing the limits of science and human biology to save more extremely premature babies than ever before. But when so few survive, are we putting them through needless suffering? By Sophie McBain. Read by Chloe Pirrie. Help support our independent journalism at theguardian.com/longreadpod