From Within - Chemists' knowledge of the interaction of radiation and matter is the basis for analytical methods of sensitivity and specificity. The Mole - Using Avogadro's law, the mass of a substance can be related to the number of particles contained in that mass. Water - The special chemical properties of water are explored, along with the need for its protection and conservation. The Driving Forces - Endothermic and exothermic reactions are investigated and the role of entropy is revealed. Molecules in Action - Observing molecules during chemical reactions helps explain the role of catalysts. Dynamic equilibrium is also demonstrated. The Busy Electron - The principles of electrochemical cell design are explained through batteries, sensors, and a solar-powered car. The Proton in Chemistry - Demonstrations explain pH and how it is measured, and the important role of acids and bases. The Precious Envelope - The earth's atmosphere is examined through theories of chemical evolution; ozone depletion and the greenhouse effect are explained. The Chemistry of the Earth - Silicon, a cornerstone of the high-tech industry, is one of the elements of the Earth highlighted in this program. Metals - Malleability, ductility, and conductivity are examined, along with methods for extracting metals from ores and blending alloys. On the Surface - Surface science examines how surfaces react with each other at the molecular level. Carbon - The versatility of carbon's molecular structures and the enormous range of properties of its compounds are presented. The Age of Polymers - How chemists control the molecular structure to create polymers with special properties is explored. Proteins: Structure and Function - The program examines proteins — polymers built from only 20 basic amino acids. The Genetic Code - The structure and role of the nucleic acids, DNA and RNA, are investigated. Chemistry and the Environment - Dump site waste management demonstrates chemistry's benefits and problems. Futures - Interviews with leaders from academia and industry explore the frontiers of chemical research. References Television series by the Annenberg Foundation PBS original programming American educational television series Science education television series 1990s American documentary television series 1990 American television series debuts 1990 American television series endings