Human cause of global warming is near certainty, UN reports
Friday, January 31, 2014 - 09:00
in Earth & Climate
Global warming is unequivocal, human influence has been the dominant cause since the mid-20th century, and atmospheric concentrations of greenhouse gases, already at levels not seen in at least 800,000 years, will persist for many centuries, the final version of the latest United Nations report on climate change warned today.