| The teenagers will visit many of Iceland's unique features, including geysers, volcanoes and geothermal hotspots. |
| Specialized microorganisms called extremophiles thrive in nuclear waste, volcanic vents, boiling geothermal geysers and even deep inside rocks. |
| Surface geothermal manifestations include hot steaming ground, fumaroles, mud pools, and warm to boiling hot springs. |
| We should pursue all viable alternative energy sources, from nuclear power to solar to geothermal. |
| Built-in desuperheaters are common on geothermal heat pumps and can be used with standard heat pumps. |
| One boon was a new awareness of the extent to which seismic activity affects Yellowstone's geothermal features. |
