Climate challenges
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The United Nations climate change panel says global warming is now a permanent feature of everyday life, but steps can still be taken to prevent the worst effects.
The Intergovernmental Panel on Climate Change issued a long-awaited report Monday saying climate change is “unequivocally caused by human activities” that have led to a gradual warming of the Earth by just over 1.1 degrees Celsius since the preindustrial 19th century.