Every month in this stunning 12-month wall calendar shows a big beautiful photograph of a featured element and gives information and interesting anecdotes about the history and use of the element. Featured elements in the 2017 calendar include cesium (55), sulfur (16), iron (26), oxygen (8), scandium (21), yttrium (39), germanium (32), gold (79), technetium (43), lanthanum (57), tungsten (74), and ruthenium (44). Smaller images of compounds are featured within the monthly grid and show the element's every-day use. Monthly grids include important dates in chemical history, as well as major North American, British, Australian and New Zealand holidays. As well as the monthly phases of the moon.