FILE - The sun shines behind the Jamtalferner Glacier near Galtuer, Austria, Sept. 6, 2023. The world is in danger of hitting the point of no return for five of Earth’s natural systems because of human-caused climate change, a team of scientists said on Wednesday, Dec. 6, on the sidelines of the United Nations’ climate summit. (AP Photo/Matthias Schrader, File)
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