A whitish semicircular arc seen opposite the sun in fog. ...
A volcanic winter is a reduction in global temperatures ...
Volcanic gases include a variety of substances given off by ...
According to the NOAA, 2013 was reported to be the 4th ...
The iceberg that sank the Titanic on April 15, 1912 was ...
In volcanology, a lava dome or volcanic dome is a roughly ...
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