The Guardian's Audio Long Reads

The story of El Salvador’s gang problem is a study in shortsighted thinking – and Donald Trump’s policies threaten to make a bad situation even worse. By William Wheeler

The US believed the American way of life was humankind’s ultimate destiny. But unrestrained greed has led to an era of injustice and division. By Andrew Bacevich

From the ‘KonMari method’ to Apple’s barely there design philosophy, we are forever being urged to declutter and simplify our lives. But does minimalism really make us any happier? By Kyle Chayka

The office-space startup took a tumble when investors tired of its messianic CEO and lack of profits. But why were its backers – the House of Saud among them – so keen to pour billions into it in the first place? By Matthew Zeitlin

Hundreds of ski resorts now stand abandoned across the Alps. But some scientists believe they have found a way to keep snow on the ground – and that it could help vulnerable communities all over the world. By Simon Parkin

In our self-obsessed age, the anonymous, mysterious cave art of our ancient ancestors is exhilarating. By Barbara Ehrenreich

In an era of bewildering upheaval, how will the past decade be remembered? By Andy Beckett

Three years after the MP’s murder, many questions remain unanswered. By Kester Aspden

Have we entered a new phase of planetary history? Human activity has transformed the Earth – but scientists are divided about whether this is really a turning point in geological history. By Nicola Davison

After her son was born prematurely, Tahmima Anam thought the worst was behind her. But when he was allowed to come home two months later, a new problem emerged: he refused to eat