BREAKING: A new United Nations scientific report examines how global warming and land interact in a vicious cycle. Human-caused climate change is dramatically degrading the land, while the way people use the land is making global warming worse.
FILE - This Monday, July 30, 2018 file photo shows rows of soybean plants in a field near Bennington, Neb. A report by the United Nations released on Thursday, Aug. 8, 2019 says that human-caused climate change is dramatically degrading the planet’s land, while the way people use the Earth is making global warming worse.
“The cycle is accelerating,” said NASA climate scientist Cynthia Rosenzweig, a report co-author. “The threat of climate change affecting people’s food on their dinner table is increasing.” The report said climate change already has worsened land degradation, caused deserts to grow, permafrost to thaw and made forests more vulnerable to drought, fire, pests and disease. That’s happened even as much of the globe has gotten greener because of extra carbon dioxide in the air. Climate change has also added to other forces that have reduced the number of species on Earth.
For example, high levels of carbon in the air in experiments show wheat has 6 to 13% less protein, 4 to 7% less zinc and 5 to 8% less iron, she said. “Currently 25-30% of total food produced is lost or wasted,” the report said. Fixing that would free up millions of square miles of land.
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