 
        
        	The icy moons contain several of the ingredients required for habitable worlds including water, organics and energy. This talk first reviews the lines of evidence leading to the conclusion that a liquid water layer is present in the interior of Europa, Callisto, Ganymede, Enceladus and Titan. Then, the fate of organics on Titan is described at the light of recent Cassini observations. Finally, the importance of tidal energy is briefly discussed.
 Getting Under Europa’s Skin
                    
                    Getting Under Europa’s Skin Tracing Formation and Evolution of Outer Solar System Bodies Through Stable Isotopes and Noble Gas Abundances
                    
                    Tracing Formation and Evolution of Outer Solar System Bodies Through Stable Isotopes and Noble Gas Abundances Photosynthesis, a Planetary Revolution
                    
                    Photosynthesis, a Planetary Revolution Xenon: King of the Gases
                    
                    Xenon: King of the Gases