F****our speculative stories of disasters, dystopias and destroyed civilisationsJohn Christopher is probably best known for his seminal science ficion novel The Death of Grass and his ‘Tripods’ trilogy for young adults, which was adapted for BBC TV and became a cult classic. Alongside John Wyndham, he was one of the foremost exponents of ‘disaster fiction’, and these four fantastic productions all centre around post-apocalyptic themes – from deadly disease...