Science commentator Siouxsie Wiles looks at two studies focused on why people can test positive for Covid-19 weeks after an infection, and whether they’re still infectious. She’ll also talk about the giant hornet from East Asia that’s been spotted in the US, and how Japanese honeybees have developed a way to defend themselves – something that might not be possible for honeybees in the US.

Associate Professor Dr Siouxsie Wiles is the head of Bioluminescent Superbugs Lab at the University of Auckland.