Both DNA and plastic, two seemingly unrelated materials, are classified as polymers, compounds of usually high molecular weight consisting of a number of structural units linked together by covalent bonds. A diverse assortment of natural and synthetic materials comprises the class of polymers, including hair, polyester, and shellac. Polymers are even used in the production of microprocessor parts. Which 6 primary polymers make up nearly 98% of all polymers and plastics encountered in daily life?
Back in the day
Born Albino Luciani, Pope John Paul I was the first pope to choose a double name, a move that honored his two immediate predecessors, Pope John XXIII and Pope Paul VI. Refusing to have the millennium-old traditional papal coronation, he instead opted for a simplified ceremony. His 33-day papacy was one of the shortest reigns in papal history, resulting in the "Year of Three Popes." What were several conspiracy theories that arose at the time of Pope John Paul I's death?
Born on a day like today
CortÃ¡zar was an Argentinean novelist who gained recognition as one of the century's major experimental writers. A permanent resident of France after 1951, his works reflect his interest in French Surrealism, psychoanalysis, photography, jazz, and revolutionary Latin American politics. His masterpiece, Rayuela, translated as Hopscotch, is a dazzling literary experiment that is considered one of the best novels written in Spanish in the past century. What is unique about the novel?