Geologists discovered a new blue water spring at Yellowstone National Park that likely formed after a series of "mildly explosive events," the United States Geological Survey said. The hole is about ...

The dominant rock type in the Yellowstone region is rhyolite, and that is very rich in silica. As hot water circulates underground, it can dissolve that silica and bring it to the surface, where it is ...

Chanie Kirschner is a writer, advice columnist, and educator who has covered topics ranging from parenting to fashion to sustainability. When a hurricane flooded our nearby water purification plant, ...

The summer before last, during a brutal Colorado heat wave, I drove from Boulder up a dusty road to Eldorado Springs, the source of the water that had been named the best-tasting in the country at the ...

A man gazes at the water level in a well in Morocco as the dunes of the Sahara desert extend to the horizon in the main image shown above, taken by M’hammed Kilito. The stark shot is part of the ...