If the world does not act with great urgency to mitigate greenhouse emissions, we will need to completely redefine what a hot year is and a cold year is. By 2047, plus or minus five years, the coldest years the world experiences will actually be warmer than the hottest years in the past. This disturbing projection was published in the journal Nature by a team of researchers led by Camilo Mora

"Unprecedented climates will occur earliest in the tropics and among low-income countries," the authors write, "highlighting the vulnerability of global biodiversity and the limited governmental capacity to respond to the impacts of climate change."

The authors argue, however, that urgent action might delay these changes by several decades, allowing both nature and humans to adapt. 

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