..."The science has made it plainly clear that climate change is happening now and, unfortunately, much, much faster than you may think," he said.
"Having visited Kiribati and the Solomon Islands has strengthened my conviction that climate change is a distinct threat to humanity, it is even a threat to international peace and stability."
Ban said the rising oceans were sending a signal that something was "seriously wrong with our current model of economic development".
"We will not succeed in reducing emissions without sustainable energy solutions," he said.
Evidence and explanations on climate change are available from many highly reputable sources. Listed here are a selection from: the Met Office; the United Nations; the Royal Society; the UK Government's Dept of Energy and Climate Change; and NASA.
http://climate.nasa.gov/ (click image above to see a larger version).