BBC America is launching its HD channel with a week of science fiction, starting July 20. They'll be premiering the Easter Doctor Who special, "Planet Of The Dead" — which happens to be the first Who shot in HD — and running the new Torchwood miniseries "Children Of Earth." On July 20, a Torchwood behind-the-scenes special called Inside The Hub will air at 8 PM, followed by the first episode of "Children." Succeeding Torchwood installments will air at 8 PM on the following nights. The season finale of Primeval airs that Saturday, and then "Planet Of The Dead" airs the next day, the Sunday.