The Optimistic Ecology Meetings - Our incredible biodiversity

The 2025 Optimistic Ecology Meetings offer a program around the theme of biodiversity: a series of activities for young and old, to help them understand current issues and learn while having fun!

Friday from 10 a.m. to 18 p.m., Saturday and Sunday from 13 p.m. to 18 p.m. at Vieille Ile Square

Workshops on marine biodiversity with the Petits débrouillards

Workshops on soil life with Les Beaux déchets

Tree climbing course

Climate and Biodiversity Tour: The scientific and human experience already hosted in 26 cities across France! Come interact directly with scientists to deepen your knowledge and better understand current environmental challenges! The experience is enriched by the diversity of formats and teaching approaches. A unique learning journey accessible to all!

3 poles:
The mechanisms of climate and the evolution of biodiversity with climate.
The role of humans in current and future developments, and their consequences in the world and in France.
Possible actions to limit the scope of these changes, from the collective to the individual, from the planet to the local territory.

Saturday and Sunday from 13 p.m. to 18 p.m.: more entertainment!

“Our Forest Words” workshops: explore the forest, rediscover sensations, then invent evocative words

30-minute mini-conferences: beavers, bats and permaculture on the program!

Permaculture workshops with the Joie-Lieu third-place

Strolling with Mother Nature and her Golden Book for Nature

Solar-powered musical entertainment

At the media library:

Exhibition "Insects, Our Fabulous Neighbors," "Discover the incredible diversity and fascinating adaptations of these tiny inhabitants that populate our planet." Friday from 13 p.m. to 19 p.m. and Saturday from 10 a.m. to 18 p.m.

Film debate and screening of the film "VIVANT" by Yann-Arthus Bertrand, in the presence of François Dulac, researcher at the Laboratory of Climate and Environmental Sciences. "From the infinitely small to the superpredator, from the earthworm to the whale, from the blade of grass to the giant tree, "Vivant" takes the most curious viewers on a journey of discovery of the biodiversity of the different regions of France." Saturday at 15 p.m., in the meeting room

Insect observation workshops, on the forecourt: Saturday and Sunday from 14 p.m. to 17 p.m.

Exhibition of giant insects by sculptor Marc Georgeault, on the forecourt