The idea was to set up a climate conference. A mini-COP21 (= a large-scale simulation) that would happen prior to the real COP21.

It would be a conference where delegates would pre-enact the COP21 agenda. The number of delegations would be sufficient to create some complexity but less than in reality to allow the process to be quick and effective.

In addition to the country delegations, the simulation would include a new set of actors who don’t hold a seat at the United Nations, but who have a lot of influence on the issue such as oceans, underground fossil fuel or indigenous delegations. Those actors would introduce a new mindset in the event and push conventional delegates to consider the 'common issues'.

And the student-delegates would be encouraged to agree on common future expectancies rather than to stick tightly to their initial positions.

The simulation happened in May 2015 at the famous Théâtre Nanterre-Amandiers close to Paris.

Students from fifty universities and schools around the world, and from all disciplines (international relations, law, architecture, economics, science and design), acted out the negotiations on stage, in front of thousands of spectators.

At the end of an intense three-day (&nights) negotiation, the students were able to hand an agreement over to the real French Ambassador for Climate Negotiations, Laurence Tubiana. This ambitious and innovative agreement was achieved after difficult discussions and numerous unexpected developments.

The students attempted- and succeeded - at finding the compromise that the 'real' actors are usually unable to obtain. A very strong message sent to the real COP21 negociators.

The simulation was a success. It attracted thousands of spectators and received extensive press coverage. Students have been deeply impressed by their experience and achievement and most of them have engaged in climate activism.

The organisers of the real COP21 could take heart in the clear message sent by students: a climate conference can succeed!

Six months later, the real COP21 happened and became the First ever global agreement on climate change.