Yorkshire Evening Post: IF the bookies are anything to go by, there’s a good chance we’ll have a white Christmas this year. William Hill recently slashed odds of a single snowflake being spotted on December 25 from 6/1 to 9/2 and if you ask BBC TV weatherman Paul Hudson he’ll tell you we’re “long overdue” a bad winter. The only problem with that is global warming theory says otherwise. It says that in terms of the long term forecast, things are only going to get warmer and when it comes to white Christmases, …