Book excerpt: The pharmaceutical industry is one of the most important industriesin the world, offering new medicines, vaccines, and cures to aglobal population. It is a massive industry, worthy of a deepand thorough examination of its processes and chemistry, with aview toward sustainability. The authors describe what is andisn't truly sustainable, offering a new approach and a newdefinition of the sustainability of pharmaceutical and chemicalengineering and the science behind it. This is a cutting-edgework, aimed at engineers, scientists, researchers, chemists, andstudents.