PBS often edit UK-produced shows, or change the voice over, for their US audience. Whenever I've had the opportunity to compare the two versions, the British on

PBS often edit UK-produced shows, or change the voice over, for their US audience. Whenever I've had the opportunity to compare the two versions, the British one has been vastly better -- less pompous, more intellectual, less fear-mongering, more curiosity-enhancing; also, including moments of silence. Further, unfortunately, PBS tend to cut material to fit within a shorter time-frame, e.g. a 60-minutes long drama or documentary will have lost about 5 minutes.