Science: Why we blush, music + ageing, new sepsis test

Science correspondent Dr Jen Martin joins Kathryn to talk about three new studies. One looked at what happens in the brain when someone blushes - the study used an innovative means of getting participants to blush that involved Mariah Carey! Another study looked at whether our memory for music diminishes with age and a new test for sepsis could help save patients from dying with the condition and curb the use of antibiotic over-use.