What are the Nobel gases? Did you know everything around us is made up of Chemical elements? This is a complete guide to all 115 currently known elements. It is a pleasurable tour of the very essence of our material world. The earth consists of around 90 elements, some of which are abundant, such as the silicon and oxygen of rocks and soil. Our bodies contain about 30 elements, some elements are vital to our health, others are positively harmful. See how the elements effect the human body, the uses and misuses and its environmental role. By John Emsley. 6 X 9 Paper, 539 pages. FREE SHIPPING. To order by phone call toll-free: 866-596-9982