Podcast #12 - Saving energy & protecting the environment: All about sustainable heating / An obituary for Rosa Hemmers and a farewell to a pioneer / German Sustainability Award goes to green electricity supplier Bürgerwerke eG / Change of line in green electricity certification / Podcast tip 'Zukunftsorte': Does the energy transition have an image problem? / Event tip for an energy policy kick-off to the year: ENERGIEDIALOG 2024 / Sustainability tip: Check your digital footprint / Merry Christmas from Grüner Strom Label e.V.!