Switzerland has the highest proportion of threatened species in the OECD, according to Pronatura. Across the country more than a third of the animals and plants studied and close to half of their habitats are threatened, according to Pronatura. Only 28% of those with the least education believe Swiss biodiversity is in a poor state compared with 49% of those with the most education. However, the work of some scientists suggests the loss of biodiversity could have an ecological impact as significant as climate change. Pronatura recently claimed advertisements for Swiss milk associating the product with biodiversity were misleading and made an official complaint.
