Two volcanoes in Alaska and Popocatepetl in Mexico are either erupting or showing signs of activity. As sea levels continue to rise, putting pressure on continental shelves, predictions are that volcanic activity will also increase, as well as seismic activity. Whether or not earthquakes will follow the eruptions of these volcanoes is not known, but officials are concerned that plumes from the Alaskan volcanoes could endanger air travel from the US to Asia, and Mexican vulcanologists are watching Popo carefully, in expectation of a more significant and potentially dangerous level of activity.
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