The ozone content of the air has doubled in the past 50 years.
Ozone affects all living things - plants, animals and humans. In early summer, ozone levels rise, as is shown in the newspapers with the weather forecast - but does that tell us enough?
With this quiz you can test your knowledge about ozone and probably learn more!
This film shows how ozone affects our native woody species. It presents a virtual journey into leaf injury from the tree crown to the cells based on scientific research at WSL, Birmensdorf. The film is a complement to lessons and presentations at the university, in schools and for public information.