Climate Change Is Happening Faster Than Expected, and It’s More Extreme
Scientists warned in 2017 that not enough has been done to protect millions of people from an expected increase in dangerous heat waves. Credit: Chris Hondros/Getty Images
In the past year, the scientific consensus shifted toward a grimmer and less uncertain picture of the risks posed by climate change.
When the UN’s Intergovernmental Panel on Climate Change issued its 5th Climate Assessment in 2014, it formally declared that observed warming was “extremely likely” to be mostly caused by human activity.
This year, a major scientific update from the United States Global Change Research Program put it more bluntly: “There is no convincing alternative explanation.”
Other scientific authorities have issued similar assessments:
• The Royal Society published a compendium of how the science has advanced, warning that it seems likelier that we’ve been underestimating the risks of warming than…
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