Exploring Lava River Cave Near Flagstaff, Arizona
Lava River Cave is an accessible and well-preserved lava tube that displays several distinct geological features.
May 19, 2012
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Kevin Schindler
Stratospheric Ozone Decreased by Major Volcanic Eruptions
Major volcanic eruptions, in which the emitted sulphur dioxide gas reaches the stratosphere, now contribute to ozone depletion. It wasn't always that way.
Nov 11, 2011
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John Austin
The Climate Effects of Volcanic Eruptions
Volcanic eruptions affect climate on many time scales. To understand the human influence on climate it is necessary to appreciate these natural influences.
Nov 8, 2011
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John Austin
Humans Create More Atmospheric Carbon Dioxide Than Volcanoes Do
A discussion of current data that document the relative amounts of carbon dioxide added to Earth's atmosphere by human activities versus active volcanoes.
Jul 8, 2011
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Wendell Duffield
The Geology of Yucca Mountain
Yucca Mountain, a proposed and controversial site of nuclear waste storage, was created from large volcanic eruptions.
Jun 28, 2011
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Alexandra Matiella Novak
topic editor
Alexandra Matiella Novak - With a PhD in Geology and expertise in science education, Alexandra is passionate about increasing the public's Earth science ...