Summary:
- Ozone pollution is a major threat to the survival of trees across the western United States. Ozone is a harmful gas that can damage the leaves and needles of trees, making it difficult for them to photosynthesize and grow.
- The study found that ozone pollution is particularly damaging to coniferous trees, such as pines and firs, which are important for the health of forest ecosystems in the western U.S.
- Reducing ozone pollution by cutting emissions from vehicles and other sources is crucial to protecting the health and survival of trees in the region, which provide important ecological and economic benefits.