Guardian: Perhaps the best way to understand the extraordinary transformation of Al Gore is to study the changing rhetoric of his enemies. A mere nine years ago, back when George Bush was just a cheeky rogue with an adorable line in malapropisms, presidential candidate Gore was famously derided as wooden and dull. Having failed to win the presidency – though of course that depends, as ever, on your definition of the word “win” – he next became a pitiable loser, then a laughable climate-change wonk, …