It's a mystery.

"A mysterious epidemic of organ 'leprosy' is sweeping Europe, corroding pipes and threatening to silence some of the continent's most renowned instruments."

"City officials are perplexed over the discovery of mysterious chunks of flesh that have been clogging up city water lines. A month ago, city officials sent a hunk of meaty-fatty tissue to the Iowa Department of Natural Resources for identification."

"A mysterious new breed of sea squirt found recently in waters in New England and the Pacific Northwest has spread unabated along those coasts and in a vital offshore fishing ground."

"A DNA investigation has solved the mysterious origin of Gibraltar's Barbary macaques, the only free-ranging monkeys in Europe, according to a report on Monday."

"Someone paid $450 to get the recipe for the 'Mystery Sandwich' that has been a staple of Chiodo's menu."

"Sedna, the mysterious minor planet orbiting the Sun beyond the far edge of the Kuiper Belt, is gradually yielding its secrets to planetary scientists."

Mysterious grave baffles cemetery caretakers: "It appeared one day, as if out of thin air. In a cemetery in a rural area of southern Columbia County, something is buried among the marked graves, but no one seems to know what it is."

England's Mysterious Patron Saint: "If there really was a St George, the most likely candidate appears to be George of Cappadocia who sold bacon to the Roman army in third-century Turkey. [...] The bacon business was replaced by heavenly myths and miracles."