Preface to Special Issue of ChemSusChemon Lignin Valorization: From Theory to Practice

In this Editorial, Guest Editors Run-Cang Sun, Joseph S. M. Samec, and Arthur J. Ragauskas introduce the Special Issue ofChemSusChemon Lignin Valorization: From Theory to Practice. The significance of and enormous challenges for the utilization of lignin are reviewed, and the contents of the Special Issue with highly interesting contributions from scientists around the world are outlined.