Another cause of sore throat is allergies that promote postnasal drip. There are, however, more serious conditions of the sinuses and throat that may cause the throat to be sore. If you are experiencing an ongoing sore throat, ask your ear, nose, and throat specialist to examine you.
1907: Samuel Simon patented the first screen printing method in Manchester, England, which was most commonly applied to wallpaper and expensive fabrics. He used rubber bands or squeegees, which are still commonly used in the screen printing process today.
In 1452, German engraver Johannes Gutenberg invented the printing press and changed the course of history. Before Gutenbergâs innovation, books were copied by hand in manuscript form â the process was costly, time-consuming and left much room for human error.