The United Nations Intergovernmental Panel on Climate Change said rising sea levels this century were already "unavoidable", threatening more flooding, coastal erosion and misery for millions of people.
Human activity was almost certainly responsible for rising global temperatures and immediate concerted worldwide action was needed to tackle the problem, it stated. UN Secretary General Ban Ki Moon said he was "alarmed" by the quickening pace of global warming, which is causing the melting of ice sheets and destruction of the Amazon rainforest.
It warns that significant numbers of animals will be lost this century, and vulnerable wildlife hotspots such as the Great Barrier Reef and the Amazon rainforest will suffer most. Millions more people will suffer food and water shortages in more frequent heatwaves and droughts, and the burden of disease will grow. Flooding, particularly in coastal areas will cause greater damage, while rainstorms will be more frequent.
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