The new Apple Plus SciFi series See is about a world in which everyone is blind. Until twins are born sighted and become a reason for tribes to go in to battle. Blindness consultant Joe Strechay tells Peter White how you teach sighted actors to portray blindness. Advent For Change, a not-for-profit enterprise, has developed a braille advent calendar. She explains why it doesn’t contain chocolate. Presenter: Peter White Producer: Lee Kumutat