The donation was announced Thursday by the National Park Foundation and National Park Service. Work on the new units in Yellowstone is set to begin later this year.
In time for summer, United Airlines is adding new service to Athens, Greece, and more flights to outdoor and national park destinations in Canada and the United States.
How did many of Yellowstone National Park's hot springs, mud pots, geysers, and perpetual spouters come to bear their colorful and descriptive names? How do newly found or described thermal features receive a name today?