isitors are seen at Grand Prismatic Spring in Yellowstone National Park, Wyoming on May 1, 2021. A study by federal and university researchers says average park temperatures in recent decades were likely the warmest of the last 800,000 years. (AP Photo/Iris Samuels)
June 23, 2021
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June 23, 2021 2:05 p.m.
Report: Climate change means less snow for Yellowstone
Changes in weather worry some