Science: Year of Fire

Mauna Loa was ticking like a time bomb. Dr. Thomas A. Jaggar, a rugged old master of volcanology at the University of Hawaii, would not venture a guess on the day or month Mauna Loa would erupt, but according to his charts and records, 1946 is a climactic year in the volcano's eleven-year cycle. That cycle has been rolling along as steady as moonrise since 1832—and probably well before that. When the eruption comes, says Dr. Jaggar, there is a good chance that a stream of smoking lava will writhe slowly down the north...

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