Studies from South Africa and the UK suggest Omicron may be a mild infection for the majority of people. Hospital admissions are down when compared with other variants. However, the virus is replicating at a much faster rate than earlier variants and is able to overcome vaccines to some extent. Cases studies so far have mainly been in young people. There is concern over what will now happen as Omicron spreads across Europe and the US where there are older unvaccinated populations. Anne von Gottberg from South Africa’s National Institute for Communicable Diseases tells us what early results from studies there show and discusses the implications.

Typhoon Rai in the Philippines led to the loss of many lives and even destroyed buildings designed to resist such extreme weather events. Could more have been done either to predict the ferocity of the typhoon or to prepare for its impact? Liz Stephens, Associate Professor in Climate Risks and Resilience from the University of Reading discusses these issues.

Beavers are making a comeback – in the Arctic. Their activity in engineering the landscape, building dams, and changing water courses is so widespread it can be picked out by satellites. However, this is not entirely welcome says Helen Wheeler Senior Lecturer in Zoology at Anglia Ruskin University. who has been working with local people concerned about the beavers impact on their livelihoods.

And the James Webb telescope is finally launching. Heidi Hammel, who has been involved in the project for over 20 years tells us what it’s all about.

Raindrops on roses and whiskers on kittens – CrowdScience has covered a lot this year. And what better way to see out 2021 than to look back at a few of our (and your!) favourite things? Great questions are right at the top of the team’s list – especially with the way that for every one we answer, five more appear in our inbox!

So for a festive treat, Marnie asks the crew to answer three of them. What's the sun's role in our sense of direction? Why are we so uncomfortable with other people’s sadness? And why does listening to the radio make us sleepy? (Or is it just too much eggnog…?) From our favourite listener advice on how to keep your Christmas lights untangled to why cold swimming could activate your Vagus nerve, tune in for new questions and more CrowdScience favourites to light up your holiday season!

Presented by Marnie Chesterton and many members the CrowdScience Team – Melanie Brown, Marijke Peters, Caroline Steel, Hannah Fisher, Samara Linton and Anand Jagatia. Produced by Sam Baker for BBC World Service.

Featuring:

• Haneul Jang, post-doctoral researcher, the Max Planck Institute for Evolutionary Anthropology • Juliet Rosenfeld, psychotherapist and author of The State of Disbelief: A Story of Death, Love and Forgetting • Mathias Basner, professor of psychiatry, University of Pennsylvania

(Image: Getty Images)

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