POLAND: On a shipwreck in the Gulf of Gdansk in the Baltic Sea, underwater archaeologists found a 200-year-old stoneware bottle—still sealed and labeled with the sign for “Selters,” the source of highly sought-after mineral water (hence the generic term “seltzer water”) in Germany. Upon testing it was found that the liquid inside contains 14 percent alcohol—though the water that was used to thin it matches the chemical makeup of the famed Selters water of the 19th century.—SAMIR S. PATEL