In early November, experts with the U.S. Geological Survey announced that Mount St. Helens was not at risk of erupting after more than 400 earthquakes were recorded near the mountain since mid-July. Earthquakes are simply part of what the most active volcano in the contiguous U.S. does, experts said.
Why didn t the Earth warm as much as estimates and numerical models projected would happen between 2000 and 2010? A new paper says now thinks the culprits are hiding in plain sight; they are dozens of volcanoes spewing sulfur dioxide.
The US has169 active volcanoes, but experts have classified 18 of these formations as the highest threat to the nation. They mostly sit in Washington, Oregon, California, Hawaii and Alaska.
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