杏吧原创

Climate change is already having a 鈥渨idespread and discernible impact鈥� on the
planet, according to a new report from the UN鈥檚 Intergovernmental Panel on
Climate Change. 鈥淭he most widespread direct risk to human settlements is
flooding and landslides, driven by rainfall, sea-level rise and tropical
storms,鈥� says the report. Around 700 scientists contributed to the report.
Within 25 years, says the panel, major water shortages will afflict 5 billion
people, especially in southern Africa, around the Mediterranean and in central
Asia, which is currently hit by drought.