---

Climate Change

There are a lot of measurement problems with global warming. There has not been any global warming for the past eight years, although that is not well known, and whether there was a rate of faster growth in the temperature of the planet in the 1930s or in the 1990s is hotly disputed—if I may use that phrase. There are also some interesting disputes about whether the last century or the mediaeval warm period was the warmest in the last millennium.