In June Europeans will go to the polls to decide the make-up of the next European Parliament. Far-right parties are expected to make significant gains in several countries, including Germany — the most populous country in the European Union.

Alternative for Deutschland (AfD) — Germany’s most popular far-right party — have been using social media, especially TikTok, to appeal to younger voters. Their political rivals, including Chancellor Olaf Sholz and his Social Democratic Party, are now playing catch-up when it comes to TikTok.

The BBC’s Kristina Volk explains who the AfD are and describes some of the controversies surrounding them during the current election campaign. TikTok specialist Marcus Bösch describes the growth of the AfD on the platform. And we hear from Maggy Hess, who started the #ReclaimTiktok campaign, which makes viral content to counter the influence of the AfD.

Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Maria Clara Montoya, William Lee Adams Editor: Verity Wilde

China and South Korea are arguing on social media. This time it’s over K-pop group IVE’s new video for HEYA: some people in China claim that the group is passing off Chinese culture as Korean.

This isn’t the first time the neighbouring countries have had disputes about the origin of certain cultural things. There have been spats involving BTS, Squid Game, fashion, and - one that’s still fermenting - kimchi. The BBC’s Kerry Allen and Fan Wang talk us through the what and why.

Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: William Lee Adams Producers: Emily Horler and Mora Morrison Editor: Verity Wilde

Coral around the world is turning white and even dying as recent record ocean heat takes a devastating toll. It has triggered the fourth “global mass coral bleaching event”. Hannah chats to What in the World producer Kevyah Cardoso about the magical life of coral.

BBC climate reporter Georgina Rannard explains what’s causing this bleaching and whether the coral can recover from it. And we hear from two parts of the world where people are trying to monitor and revive their coral reefs. The BBC’s Alfred Lasteck in Tanzania tells us about his visit to the Mnemba Island, Zanzibar where they are restoring the coral reefs. And 19 year old environmental activist and divemaster Emma Batty Sukerta, whose family are from Bali, Indonesia, talks about why she is recording the sounds of the coral reefs there.

Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Kevyah Cardoso & Julia Ross-Roy Editor: Verity Wilde