On November 28, 2021 we joined Les Festives, also known as The Sorbonne University Science and Culture Festival, where have been representing the Pioneer project at a dedicated booth showing material and challenging the guest with some quizzes on CO2 conversion, see here if you have not tried yet. Additionally, we organized an open table discussion about the question “What happens if we recycle CO2?”. We enjoyed the interaction with people outside our “science bubble” very much.