Old Faithful

By Joe Schwarcz PhD, Author, USASEF Expo Performer, AT&T Sponsored Nifty Fifty Program Speaker Yellowstone National Park's iconic "Old Faithful" geyser is pretty faithful. It can be counted on to erupt every 50-90 minutes. Iceland's "Great Geysir," from which all other geysers get their name is less reliable. It was mostly dormant for sixty five years before it began semi-regular eruptions again in 2000 thanks to an earthquake. But in New Zealand, you can set your watch by the eruption of the Lady Knox Geyser, named after a former Governor of the country. At exactly 10:15 AM every…