With this Special Issue "An Energy Transition To Save The Planet" edited by Vincenzo Balzani, Substantia contributes to the celebrations of the 150^th anniversary of the periodic table.

Cover image: Autofluorescence micrograph (magnification 10x) from Fern sorus (structures producing and containing spores), by Rogelio Moreno Gill, Panama, Panama. Courtesy of Nikon Small World (2^nd Place, 2018 Photomicrography Competition, https://www.nikonsmallworld.com).