> The Earth System Fresco covers most of the key elements to understand the current situation and the limits of the Earth system. The workshop brings global understanding and the need to review the whole system of thought and the very nature of the solutions.

> To understand the issues sector by sector, the workshop can be continued to target and analyze one facet separately from the rest (a sector, country, object, etc.) and better realize its own impacts on the limits of the system.

> Extensions add of a very simple action, simply consisting in placing the cards of the extension above or next to the cards of the initial workshop, by browsing the complements on the chosen focus. They are a unique color, which differs from the cards in the main workshop.

> Extensions add approximately 30 to 60 minutes at the end of the initial workshop. They are designed to be done following it. They total between 13 and 40 more cards, in a single batch.

> All extensions must include at least 13 cards: the 9 planetary boundary cards, the "Pollution" card, the "Human activities" card and the two cards dealing with sustainability.