Brazil has recorded its hottest ever temperature - 44.8C (112.6F) - as parts of the country endure a stifling heatwave.

You may have seen the video of Taylor Swift struggling to catch her breath while performing in Rio de Janeiro. She pushed back a performance on Saturday after it emerged a fan had died after going into cardiac arrest at the stadium.

Climate change and El Niño are both impacting this heatwave. But what is El Niño? We explain.

And Dr Sooj (@doctorsooj on Tik Tok) offers advice about how to spot, and prevent, heat stroke.

Plus, North Korea has revealed that its put its first spy satellite into orbit. Surbhi Kaul from BBC Monitoring tells us more.

Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Alex Rhodes Producers: Mora Morrison, Benita Barden and Luis Felipe Molina Editors: Verity Wilde and Simon Peeks

Brazil heatwave: What’s it got to do with El Niño? 14:27 Share

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Brazil heatwave: What’s it got to do with El Niño?