Environmentalism began emerging in the mid-20th century in response to concerns about environmental damage that threatened human and wildlife health. Industrial pollution poses a major threat through destructive consumption of natural resources. While environmentalism criticizes industrial practices, it is also a modern movement influenced by industrialization. Scientists began warning in the late 1980s about potential climate changes resulting from rising carbon dioxide levels, which could lead to issues like flooding, desertification and famine. Environmental themes are now common in media like advertisements, literature, tourism materials, documentaries and films.