Nikhita Chulani
Nikhita Chulani is the Guardian's editor for breaking news and sports video. Twitter @nchulani
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Play VideoWine bottles to sand: the TikToker trying to save our coastlines – video report
Known as 'that sand girl' on TikTok, 24-year-old Franziska Trautmann talks about recycling glass into sand in order to replace eroding coastlines in her home state of Louisiana and beyond
3:27
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Play VideoA hidden war crime: footage sheds light on horrors of war in Syria – video explainer
This distressing video is 'one of the most indictable videos from the whole Syrian conflict' and 'gives us a glimpse into a previously untold part of the 10-year war', says the Guardian’s Martin Chulov
3:58
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Play VideoVoices of Covid doctors: 'It was always about trying to save you' – video
'Science, empathy and humility': after almost two years of fighting a pandemic we hear from five doctors who have been on the Covid frontlines about their worst days, the lessons they have learned and why they still have hope
4:12
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Play VideoWhy Omicron is the most worrying Covid variant yet – video explainer
The Omicron variant has prompted the return of border closures and mandatory testing and mask wearing as countries attempt to slow its spread
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Play VideoWhy the world is getting hotter and how you can help – video explainer
How to save the world, by counting to zero: the Guardian's Phoebe Weston breaks down all the climate jargon we have been hearing in the run-up to Cop26 and explains what we – and most importantly, our governments – need to do to help protect our planet and its future
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Play VideoThe climate science behind flooding: why is it getting worse? – video explainer
The Guardian's environment editor, Damian Carrington, examines exactly how the climate crisis is fuelling devastating floods – and what we can do to help protect ourselves and our planet
5:22
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Play VideoAre Covid vaccine booster shots necessary? – video explainer
As many countries with high vaccination rates consider offering people an additional dose, the Guardian's Natalie Grover looks at the latest evidence on booster shots
4:03
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Play VideoWhat sparked the mass violence in South Africa – video explainer
The Guardian's Africa correspondent, Jason Burke, explains what caused the worst violence in the country since the end of its apartheid regime 27 years ago.
5:56