Climate change is drastically affecting the world’s ecosystems and human societies. The frequency of extreme weather events such as floods or droughts is increasing, putting a strain on infrastructure, and causing many casualties. On a global level, rising sea levels, new pandemics and increasing desertification can be clearly linked to climate change.

But all is not lost, on the contrary. There is still time to adapt to climate change and limit its extreme effects by committing ourselves globally to keep the increase in temperature below +2°C, or better +1.5°C. To achieve this, we must rapidly and permanently move away from fossil fuels.

We need to massively finance renewable energy, including solar, geothermal and wind. We must capture and sequester emissions that cannot be eliminated, eat more fresh products and less meat, use trains instead of planes, and bicycles instead of cars. Finally, we must review our unrealistic economic and financial growth targets, considering planetary limits.

                                                                - Nicolas Tetreault, executive director CLIMACT 

CLIMACT (Climate Impact and Action Centre), through its community and activities, is committed to an equitable, inclusive and sustainable society focused on collective well-being.  

Affiliated to UNIL (University of Lausanne) and EPFL (Swiss Federal Institute of Technology Lausanne), CLIMACT officially launched its activities in June 2021. The research centre is directed by Prof. Julia Steinberger and Prof. Michael Lehning (academic co-directors) and Dr Nicolas Tétreault (executive director). The centre encourages all UNIL and EPFL faculties to contribute to the fight against climate change and its impacts. It responds to the need not only to consolidate research and innovation activities related to climate change, but also to give visibility to climate action.

News & Articles

Inform about climate issues, explain the most recent scientific discoveries, dialogue with Swiss experts, highlight solutions for a sustainable transformation of our society.

CLIMACT announces the 2022 winners of the CLIMACT Starting Grants
CLIMACT Starting Grants

CLIMACT announces the 2022 winners of the CLIMACT Starting Grants

Annoucement of the five winning projects for the CLIMACT Starting Grant 2022.

Posted on Nov 25, 2022
Influence of mobility on pollution in Geneva
Climate change

Influence of mobility on pollution in Geneva

Air pollution has an undeniable impact on public health by promoting and exacerbating respiratory, skin, and cardiovascular diseases in exposed individuals. In the context of this work, it was found that many individuals are not aware of the risks incurred by prolonged exposure to pollution.

Posted on Nov 18, 2022
Michaël Bayunga

Graduate UNIL FGSE

Biodiversity: urgent open letter from 86 scientists of 23 Swiss institutions

Biodiversity: urgent open letter from 86 scientists of 23 Swiss institutions

They point out that compromising biodiversity preservation for the sake of the energy transition is counterproductive

Posted on Nov 8, 2022
Prof. Antoine Guisan



Designed to help find high-impact, interdisciplinary solutions through direct dialogue with key actors engaged in climate change mitigation and adaptation.

Climate change

Poster Conference “Key aspects and current issues of climate change”

A joint event organized by E4S and CLIMACT


Dec 15, 2022


14:00 - 16:30


EPFL CO Building, 1st Floor

CLIMACT seminar series

3rd CLIMACT seminar series - Episode #5


Nov 28, 2022


11:00 - 12:15

Presented by
Pierre Kohler

Member of Degrowth Switzerland

Dr. Pia Furchheim


Our Projects

Promoting concrete actions based on interdisciplinary and inter-institutional research as well as on a systemic approach to address the social, scientific, and technological challenges associated with climate change.

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