The Midway Geyser Basin's Grand Prismatic Spring is the largest hot spring in Yellowstone and one of the largest hot springs in the world. Measuring approximately 370 feet in size and around 121 ...

Explore one of the hottest springs in the U.S. at Yellowstone's vibrant basin, home to the once-largest geyser in the world ...

How the Grand Prismatic Spring Gets Its Kaleidoscopic Colors The beating heart of Yellowstone National Park is without a doubt the Grand Prismatic Spring—the largest hot spring in the U.S.

A study suggests ancient hot springs, like Yellowstone's, may have supported reactions crucial for the birth of life on our planet.

Although it’s long been suggested that hydrothermal vents could’ve played a starring role in the formation of life on Earth ...

The colors of Grand Prismatic Spring come from thermophiles: microbes that thrive in scalding water. The green is chlorophyll they use to absorb sunlight. A camera trap caught a grizzly reaching ...

The colors of Grand Prismatic Spring come from thermophiles: microbes that thrive in scalding water. The green is chlorophyll they use to absorb sunlight. Old Faithful throws a tower of steam into ...

These same minerals are also found in hot springs today, such as the Grand Prismatic Spring in Yellowstone National Park in the United States. Hot springs are bodies of groundwater heated by ...

These same minerals are also found in hot springs today, such as the Grand Prismatic Spring in Yellowstone National Park in the United States. Hot springs are bodies of groundwater heated by volcanic ...