Methane Valorization Processes: Challenges and Achievements;Turquois Hydrogen: Methane Pyrolysis as a Low-CO₂ Source of H₂;Syngas-free Methane-to-methanol via Catalysis and Oxygen Looping;Conversion of Methane to Acetylene;Homogeneously Catalysed Functionalization of Methane;Methane Pyrolysis for CO₂-free Hydrogen Production;Biological Methane Conversion;The Potential of Chemical Looping Solutions for Direct Methane Conversion;Process Intensification Opportunities for Direct Methane Valorisation;Separations in Processes for Methane Conversion;Methane Direct Conversion: An Industrial View;Concepts of Methane Activation