Roxanne Khamsi: You are mutating – and that’s (mostly) a good thing

Mutations sound scary. But the DNA that shaped us is has been mutating since we were born. Some mutations are bad for our health while others are helping us stay alive, sprucing up our livers and fighting off germs. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.