- Predicting Old Faithful, Yellowstone InDepth episode (4 min. 41 sec.): Ranger Darlene Bos explains how we predict eruptions for this popular geyser.
- Hydrothermal Features
- Hydrothermal Features Videos: Watch videos that tell the story of microorganisms that thrive in hot water.
- Old Faithful Geyser Webcam: Watch streaming video of Old Faithful and other geysers.
- Life in Extreme Heat (Other Life Forms)