Officials in Lahore, Pakistan have been using artificial rain in an effort to lower levels of air pollution. They make it rain through cloud seeding, a process that involves firing special particulates from a plane.

Alex from the What in the World team explains how the process works. And Navin Singh Kadka, the BBC’s global environment correspondent, discusses the impact of creating artificial rain and the controversies that come with it.

Also: The 2023 Africa Cup of Nations (Afcon) starts on 13 January. Several of Africa’s top footballers will step away from their clubs in Europe and Saudi Arabia during the month-long tournament. Nishat Ladha, a reporter with BBC Africa Sport, explains the impact that could have on their clubs and their careers.

Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producer: Alex Rhodes and William Lee Adams Editors: Verity Wilde and Simon Peeks