Research reveals that more than 3,500 animal species—including fish, birds, arachnids, and mollusks—are threatened by the climate crisis. The study, published in BioScience and led by Oregon State University’s College of Forestry, examined data on over 70,800 animal species. It found that in six different classes (groups like birds, fish, and mollusks), at least one quarter of the species are threatened by climate change. Researchers expressed p…