A surreal scientific blunder last week raised a huge question mark about the temperature records that underpin the worldwide alarm over global warming. On Monday, Nasa's Goddard Institute for Space Studies (GISS), which is run by Al Gore's chief scientific ally, Dr James Hansen, and is one of four bodies responsible for monitoring global temperatures, announced that last month was the hottest October on record. Snow in London A sudden cold snap brought snow to London in October # Read more from Christopher Booker This was startling. Across the world there were reports of unseasonal snow and plummeting temperatures last...