Such is the story of an Arkansas man who drank so much iced tea that it led him to develop kidney failure. Three Arkansas doctors described the case in a letter published by the New England Journal of Medicine this week.
What is Marble? Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite.
Ancient marbles have been regularly found in Egyptian tombs, Greek and Roman archaeological digs, and even before that, since marbles have also been found that date back to the Ice Age. It has been theorized that the first marbles, used for play, were just small pebbles or balls made from natural clay. The succeeding materials used for marbles were china, real marble, and glass. They were all handmade until the year 1848 brought the invention of the marble scissor by a German glass blower, which made production much easier. Large-scale machine production of toy marbles began a few decades later, when machine-made marbles were first rolled out in Germany and the United States in 1890, and the marble craze happened afterwards. In the 1950s, the use of marbles really exploded. Also, the catâs eye marble was created by injecting colored glass in a regular marble. Various effects were achieved with the use of different colored glass and different shapes or swirls.