Climate Change: Where Are We Now?
Unsustainable
MAY 1, 2019
Eighteen of the 19 warmest years all have occurred since 2001, with the exception of 1998. The IPCC was an outgrowth of a 1987 Canadian conference which produced the Montreal Protocol , an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.
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