Here are three not-so trivial questions you probably won’t find in your next pub quiz. First, how much warmer has the world become since a) 1880 and b) the beginning of 1997? And what has this got to do with your ever-increasing energy bill?
You may find the answers to the first two surprising. Since 1880, when reliable temperature records began to be kept across most of the globe, the world has warmed by about 0.75 degrees Celsius.
From the start of 1997 until August 2012, however, figures released last week show the answer is zero: the trend, derived from the aggregate data collected from more than 3,000 worldwide measuring points, has been flat.