Global warming threatens to extinguish hundreds of millions of human lives and nearly a third of the planet's wildlife, an international panel of climate scientists said in a report issued today.
The Intergovernmental Panel on Climate Change (IPCC) warned that the world's poorer nations face spiraling rates of death and disease due to increased risk of droughts, floods, storms and other severe climate effects spurred by human-caused greenhouse gas emissions.
Up to 30 percent of animal and plant species could be wiped out by a global temperature rise of 2.7 to 4.5 degrees Fahrenheit (1.5 to 2.5 degrees Celsius), experts said.
The IPCC forecasts a rise of between 3.2 and 7.1 degrees Fahrenheit (1.8 and 4 degrees Celsius) by the end of this century.
The new findings, based on the work of some 2,500 scientists in more than 130 countries, follow an IPCC statement in February that global warming is "unequivocal" and that human activity is almost certainly the cause.
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