Blue Planet III review – David Attenborough makes another absolute corker

It’s funny, tense, stunningly forceful – the excellence of this franchise’s return is a bright flash of hopeful defianceWe settle down in front of a fresh Blue Planet, trying to escape a weary sadness that stalks us from several angles. It is a new natural history show narrated by the 100-year-old David Attenborough, so there cannot be many more of…