http://www.reuters.com/article/environmentNews/idUSL0338996720071003Governments may need to step up the fight against global warming to a level beyond even the toughest existing goals to help safeguard the planet, the head of the U.N. climate panel said on Wednesday.
Risks ranging from extinctions of animals and plants to rising sea levels meant that even a strict European Union target of limiting global warming to 2 Celsius (3.6 Fahrenheit) over pre-industrial levels might be too lax.
"People are actually questioning if the 2 degrees Centigrade benchmark that has been set is safe enough," Rajendra Pachauri, head of the Intergovernmental Panel on Climate Change (IPCC), told a Reuters Environment Summit.
"There are some responsible voices that are raising this question. I expect that this will multiply," he said, adding the issue was starting to be discussed by scientists and policymakers.
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