Science commentator Siouxsie Wiles highlights a Canadian study which analysed the reliability of Covid-19 videos on YouTube, a study from the UK that found dogs become less obedient to their owner when they hit puberty at around 8 months, and she'll also tell Kathryn about a new study that's found squid and lantern fish can dazzle their elephant seal foes with a bioluminescent flash - buying time for their escape. Associate Professor Dr Siouxsie Wiles is the head of Bioluminescent Superbugs Lab at the University of Auckland.