If recent media reports are correct, Americans should be increasingly concerned about volcanoes. Earlier this month, two major North American volcanoes suddenly became active resulting in two governments issuing “Yellow Alerts.” The Mexican government issued a “Yellow Alert” for the country’s Mt. Popocatepetl and the American government issued a similar yellow alert for Alaska’s Great Sitkin. According to the US Geological Survey, there are six levels of alert for active volcanoes: Green: Describes volcanoes with minor levels of activity such as steam and small earthquakes, but are not considered a threat to erupt. Yellow: This designation is for volcanoes that have experienced elevated signs of activity. Explosions have increased from low to moderate. There is a threat of ash falling near the volcano and even the possibility of limited lava flows. Orange Watch: This indicates there is an increased risk of an explosion. Though the time frame is uncertain. Orange Warning: At this level a volcanic eruption is imminent or a minor eruption is already underway. This would result in lava flows and ash production …