Global warming threat heightened in latest United Nations report

Apr 01 2014, 10:14 IST
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More global warming increased the chance of harsh, widespread impacts that could be surprising or irreversible, it added. (Reuters) More global warming increased the chance of harsh, widespread impacts that could be surprising or irreversible, it added. (Reuters)
SummaryGlobal warming poses a growing threat to the health, economic prospects, and food and water sources of billions of people, top scientists said in a report that urges swift action to counter the effects of carbon emissions.

Global warming poses a growing threat to the health, economic prospects, and food and water sources of billions of people, top scientists said in a report that urges swift action to counter the effects of carbon emissions.

The latest report from the U.N. Intergovernmental Panel on Climate Change (IPCC) says the effects of warming are being felt everywhere, fuelling potential food shortages, natural disasters and raising the risk of wars.

"The world, in many cases, is ill-prepared for risks from a changing climate," the IPCC said on Monday, after the final text of the report was agreed.

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More global warming increased the chance of harsh, widespread impacts that could be surprising or irreversible, it added.

The report projects global warming may cut world economic output by between 0.2 and 2.0 percent a year should mean temperatures rise by 2 degrees Celsius (3.6 Fahrenheit), estimates that many countries say are too low.

"Over the coming decades, climate change will have mostly negative impacts," said Michel Jarraud, Secretary-General of the World Meteorological Organization (WMO), citing cities, ecosystems and water supply as being among the areas at risk.

"The poor and vulnerable will be most affected," he added.

The IPCC was set up in 1988 by the WMO and the United Nations Environment Programme.

RISK EMPHASIS

The report emphasises the risks, and portrays cuts to greenhouse gas emissions as an insurance policy for the planet.

"Climate change is really a challenge of managing risks," Christopher Field, co-chair of the IPCC group preparing the report, told Reuters before its release on Monday.

The risks range from death to disrupted livelihoods in low-lying coastal zones and small islands, due to storm surges, coastal flooding, and sea-level rise, the report said.

Immediate action is needed, says the report, which follows a warning that humans are probably responsible for global warming thought to cause droughts, colder weather and rising sea levels.

"Unless we act dramatically and quickly, science tells us our climate and our way of life are literally in jeopardy," U.S. Secretary of State John Kerry said in a statement. "Denial of the science is malpractice."

Still, many governments have pleaded for greater scientific certainty before making billion-dollar investments in everything from flood barriers to renewable energies.

"There are those who say we can't afford to act. But waiting is truly unaffordable. The costs of inaction are catastrophic," Kerry said.

Global warming will worsen health threats, damage crop yields and

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