Simon Klein is an ecologist, has a PhD in pollinator behavioural ecology and has a higher degree in education. He has long worked on the links between flowers, the behaviour of pollinators and human-induced global changes. His articles have been published in numerous scientific journals. He is now dedicated to accompanying teachers in the face of the crucial issues related to climate change and the protection of biodiversity. He is currently working at the Office for Climate Education, under the auspices of UNESCO.