Global Times Comprehensive Report — The hot spring pools in Yellowstone National Park often showcase a dazzling array of colors such as yellow, blue, green, and even red depending on the time of observation. But if you thought these colors were purely nature’s masterpiece, you might be disappointed. According to a report on the website of the U.S. magazine Discover on December 22, scientists have now finally found some evidence supporting the theory behind the color changes in the hot springs: human pollution.
Yellowstone's hot spring pools change color due to human pollution.