Man-made global warming is
happening, and it could be irreversible, a report by the United
Nations Intergovernmental Panel on Climate Change (IPCC) said
Wednesday.
"Risks caused by climate change will almost certainly be
high or very high by the end of the century" if humankind
doesn't significantly reduce its carbon emissions, the IPCC
warned in a draft report to be presented at an international
climate change conference in Copenhagen in October.
Should greenhouse gas emissions continue at their current
pace, the average planetary temperature will increase by two
degrees centigrade over the 1986-2005 period, reaching 3.7
degrees by 2050, the IPCC said.
Increases in the Earth's temperature mean more heat waves,
droughts, increasingly powerful typhoons and wildfires, melting
glaciers and ice caps, and rising sea levels, scientists and
environmentalists said.
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