Planet Earth II review – David Attenborough’s rollercoaster tour of the world’s wildlife returns

Ten years after the original Planet Earth series, it’s back. This week, the theme is islands – starring a lonesome sloth, warring komodos and killer snakesDavid Attenborough is a bit closer to heaven. No, not like that, he’s fine – better than fine, he’s in a hot-air balloon, above the clouds, two miles up, floating past Mont Blanc, marvelling at the power and splendour of the world. Not bad for 90.It’s called Planet Earth II (BBC1, Sunday) and, in the decade