A landmark trial is underway in California that examines the mental health effects of Instagram and YouTube. Lawyers for the plaintiff, referred to as K.G.M., will argue that she suffered from mental health issues as a result of social media addiction. Her team claims that the named social media companies deliberately built “addiction machines” that use the algorithm to keep young people hooked. K.G.M.’s lawyers also argue that Meta and YouTube failed to warn of the dangers to young users posed by the design of their platforms. Instagram and YouTube deny the allegations and argue that they can’t be held liable for users’ behaviour.

Lily Jamali, the BBC’s North America Technology correspondent, is in Los Angeles for the case. She explains the arguments on both sides, previews who we will hear from and discusses the potential implications.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: William Lee Adams, Benita Barden and Ash Mohamed Editor: Verity Wilde

On February 16 Netflix will release “Reality Check: Inside America’s Next Top Model” — a three-part series on the controversial modelling competition. Tyra Banks, the supermodel who hosted the show, features prominently in the ANTM documentary, along with former judges and coaches Jay Manuel, Nigel Barker and Miss J. We look at why Tyra might want to offer her own take on past controversies.

Melania Trump, Taylor Swift, Beyoncé and Billie Eilish are among other celebrities who feature in documentaries, docu-series or concert films. But why are these celebrity docs so popular — and what’s the business motivation behind them? BBC reporter William Lee Adams joins us to explain.

We also discuss “Melania,” which follows First Lady of the United States Melania Trump during the twenty days leading up to President Donald Trump’s inauguration in January 2025. During the film she discusses her background as an immigrant from Slovenia and the painful loss of her mother Amalija Knavs. The film also captures intimate moments within the Trump family, helping showcase the president as a person rather than a politician. We assess whether the sympathetic portrayal will change opinions in a divided America.

And what about music stars? We look at how concert films — Beyoncé’s “Renaissance: The Film,” Billie Eilish’s “Hit Me Hard and Soft: The Tour” and Taylor Swift’s “The Eras Tour” — can help singers mythologise themselves while also bringing in a lot revenue.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: William Lee Adams, Emily Horler and Mora Morrison Video Journalist: Baldeep Chahal Editor: Verity Wilde

Bad Bunny made history on Sunday as the first artist to perform almost entirely in Spanish at the Super Bowl. The performance has been interpreted as a love letter to his native Puerto Rico and featured plenty of references to the island and Latin culture more broadly. But the performance, which included a special appearance from Lady Gaga, has also sparked controversy, political backlash and a lot of debate.

BBC Sport reporter Sam Harris joins us from San Francisco immediately after the football game between the Seattle Seahawks and the New England Patriots. He explains why people thought Bad Bunny might use the Super Bowl stage to make a political statement and how his message of unity resonated with the audience. We also discuss President Trump’s criticism of the halftime show. And we hear about a rival halftime show, organised by the conservative group Turning Point USA and headlined by Kid Rock.

Bad Bunny fans from around the world also share their verdict on his performance.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: William Lee Adams, Chelsea Coates and Ash Mohamed Editor: Verity Wilde