The document discusses the loss of biodiversity and extinction of species. It notes that up to 70% of the world's known species risk extinction if global temperatures rise more than 3.5°C due to human activities like overusing resources, climate change, and habitat destruction. The top three groups of species facing extinction are amphibians, birds, and mammals. Without action from governments and societies to protect biodiversity, it will take a long time for nature to recover from the effects of human-caused climate change and environmental degradation.