New report says it's "extremely likely" that human activity caused global warming

Report performed by internation scientific panel

(AP) -- A landmark report by an international scientific panel says it's "extremely likely" that human activity is the dominant cause of global warming.
 
   That's the strongest statement to date on the issue by the Intergovernmental Panel on Climate Change.
 
   In its previous assessment, in 2007, the U.N.-sponsored panel said it was "very likely" that global warming was man-made.
 
   It now says the evidence has grown thanks to more observations, a better understanding of the climate system and improved models to analyze the impact of rising temperatures.
 
   The IPCC says a human footprint can be found in the warming of the atmosphere and oceans, in rising sea levels, melting snow and ice and in changes in some climate extremes.
 
  
 
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