BBC Radio 4 is replaying the three Torchwood episodes that preceded Children of Earth this week in their Afternoon Play segment. That means that on Wednesday, Thursday, and Friday at 14:15 GMT (that’s 2:15PM London time) you can listen to them in real time, and probably play them back for the 6 days after that. Note that this is on BBC Radio 4 proper, rather than BBC Radio 4 Extra (formerly BBC Radio 7). Over on that channel we have Arthur C Clarke’s Rendezvous with Rama on Sunday, and another brand new Doctor Who story, The Whispering Forest, with Tegan, Nyssa, and Turlough joining Davison’s Doctor. That one started yesterday, but you have 5 more days to listen to the first episode, with the story continuing Monday.