Without losing sight of "the year without summer" we focus on the environment and climate change. Through different images of the year 1816, we focus on the fact that all the paintings and illustrations of the time were yellow. We will have 3 sessions to develop PechaKucha presentation. In addition, the objectives, methodology and resources that we will use in the next three sessions will be established. The making of the presentation will involve revealing the second digit of the padlock key.