EditorialRaoul-Pierre Pictet (1846-1929). Swiss chemist and physicist. Liquefaction and solidification of hydrogen gas. Experiments done by Raoul Pictet in December 1877. Engraving by Ch. Baude. La Ilustraci?n Espa?ola y Americana, 1878.
EditorialItaly: Monsignor Vincenzo De Gregorio, abbot of the chapel of San Gennaro, attends the so-called liquefaction of the blood of Saint Januarius (Saint Gennaro) during the miracle announcement in the Cathedral of Naples, Italy, 16 December 2020. Not even the