Visitors at Sandringham are being warned over an unusually high number of the pests
                                
                                
                                    (Newser) -
                                    Well, this ought to wreck a garden party: The House of Windsor is facing a rather pedestrian problem, reports  Parade , in the form of a swarm of wasps that have invaded King Charles' Sandringham estate. Apparently, a record-dry spring boosted the numbers of the pests, and visitors to the 20,...