1. Rising global temperatures 2. Melting polar ice caps 3. Rising sea levels 4. Increased frequency and intensity of extreme weather events 5. Ocean acidification 6. Shifts in ecosystems and habitats 7. Changes in precipitation patterns 8. Loss of biodiversity 9. Increased wildfires 10. Heatwaves 11. Changes in agricultural productivity 12. Spread of disease 13. Disruption of water supply 14. Threats to food security 15. Migration and displacement of populations 16. Economic impacts 17. Loss of coastal infrastructure 18. Increased air pollution 19. Threats to human health 20. Scientific consensus