South Africa has seen weeks of protests against illegal immigrants. Some of these protests have turned violent and people have been killed. The country is grappling with deep tensions around immigration and identity.

Houses have been burned, shops damaged and looted, and people have been forced to leave their homes. There have been reports of vigilante groups checking the documentation of foreign nationals and forcing small businesses run by non-South Africans to close.

Countries like Ghana and Nigeria have even been evacuating their citizens from the country.

So what’s behind these recent protests? And what are authorities doing to try to reduce illegal migration in South Africa? BBC correspondent Mayeni Jones explains.

We also hear what South Africans and migrant workers living in the country make of the protests.

Instagram: @bbcwhatintheworld Email: [email protected] WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: William Lee Adams, Julia Ross-Roy and Stefania Okereke Editor: Verity Wilde.

Serena Williams is making a comeback to tennis at 44 years of age. She is one of the greatest players of all time. She’s won 23 Grand Slam titles - the second highest tally by a woman in the sport’s history. She’s the highest earning female athlete of all time. She was world number one for 319 weeks. And the stats go on and on. Now, she wants to add to them.

Four years after leaving the sport and after giving birth to her second child, the American will play in the doubles at Queen’s Club in London next week - a warm-up tournament on the road to Wimbledon. However, she is attempting something almost no tennis player has done before - returning to the game in their mid-40s and going up against much younger players. How well can she perform?

Ben Rothenberg, a tennis journalist who runs the Bounces podcast, joins us to explain the significance of Serena’s comeback and the challenges she might face.

Instagram: @bbcwhatintheworld Email: [email protected] WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: William Lee Adams and Adam Chowdhury Editor: Verity Wilde

New forecasts show that the developing El Niño in the tropical Pacific Ocean could be one of the strongest on record. The weather phenomenon could be so strong, scientists and the UN are describing it as a “Super El Niño” or “Godzilla El Niño.” And with that comes warnings of record global temperatures and huge potential humanitarian impacts. But what exactly is El Niño and its sister phenomenon La Niña? BBC Climate & Science correspondent Georgina Rannard breaks it down. She also explains the origins of their names, why it can lead to flooding in some regions and droughts in others, how it relates to climate change, and what people can to do prepare for its consequences.

We also hear from Drishti in India and Santiago in the US for how they’re being affected.

Instagram: @bbcwhatintheworld Email: [email protected] WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: William Lee Adams and Adam Chowdhury Video Producer: Baldeep Chahal Editor: Emily Horler