Linguistic diversity on Earth is far more profound and fundamental than previously imagined. But it’s also crumbling fast. By Ross Perlin. 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 2020: A drone sighting caused the airport to close for two days in 2018, but despite a lengthy police investigation, no culprit was ever found. So what exactly did people see in the Sussex sky? By Samira Shackle. Help support our independent journalism at theguardian.com/longreadpod

The prevalence of sickle cell disease is changing how Nigerians date, marry and plan their lives. And as genetic testing becomes more common, prospective parents across the world will face similar questions. By Krithika Varagur. Help support our independent journalism at theguardian.com/longreadpod

The ocean’s depths are not some remote alien realm, but are in fact intimately entangled with every other part of the planet. We should treat them that way. By James Bradley. 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: In 2019, the body of a man fell from a passenger plane into a garden in south London. Who was he? by Sirin Kale. Help support our independent journalism at theguardian.com/longreadpod

Pet food is a £120bn industry, with vast resources spent on working out how best to nourish and delight our beloved charges. But how do we know if we’re getting it right? By Vivian Ho. Help support our independent journalism at theguardian.com/longreadpod

Datacentres are part of Ireland’s vision of itself as a tech hub. There are now more than 80, using vast amounts of electricity. Have we entrusted our memories to a system that might destroy them? By Jessica Traynor. 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 2020: Jake Haendel spent months trapped in his body, silent and unmoving but fully conscious. Most people never emerge from ‘locked-in syndrome’, but as a doctor told him, everything about his case is bizarre. By Josh Wilbur. Help support our independent journalism at theguardian.com/longreadpod

More people have been imprisoned for rioting during a single day in Bristol in 2021 than in any other protest-related disorder since at least the 1980s. What was behind this push to prosecute so harshly? By Tom Wall. Help support our independent journalism at theguardian.com/longreadpod

We give things up when we believe we can change; we give up when we believe we can’t. By Adam Phillips. Help support our independent journalism at theguardian.com/longreadpod