Science commentator Dr Siouxsie Wiles joins Kathryn to talk about a handy online tool to help you see how likely it is someone infection will be at your gathering.
The world's oldest DNA being found in Ice Age sediment in northern Greenland - it's a million years older than anything found before.
Chinese researchers have created a wearable UV light monitoring patch which can send alerts to your phone when exposure is too high.
And if you're looking for a feel-good gift for Christmas, here's a suggestion to help the kids at Starship.
The DNA found in Greenland revealed mastodons once roamed forests in the country's northern reaches. Photo: NASA
