Science: Omicron not 'milder' and sugar-hating cockroaches

Science commentator Dr Siouxsie Wiles joins Kathryn to talk about a new UK study which shows people infected with the omicron BA.2 variant reported more symptoms and experienced a great disruption to their daily activities than those with the BA.1 variant. She'll also look at what hiding poison in sugary bait to kill cockroaches is actually doing to their sexual behaviour and two new studies suggest we may be able to identify and track wildlife by sampling DNA from the air.