Yellowstone (July 2014, Michael Thiel) COGwriter Scientist say that some of the colors now seen at Yellowstone are caused by pollution: December 21, 2014 Those brilliant, rainbow-colored hot springs at Yellowstone National Park attract many tourists each year, but they didn’t always look that way, according to researchers. Yellowstone’s thermal pools were likely a deep [...]
Published on December 21, 2014 08:05