Get ready, volcanology-fiends: It's time to get explosive with the most intense volcano blast in modern history on the continental U.S. Settle in for the tale of the 1980 Mount St. Helens eruption, along with stories of the people who tracked it [and some noted skeptics]. Later, take a quiz called "Rock Flow"-- a quiz about rock/rap collabs and bands!

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[Music: 1) Notorious B.I.G. "Juicy" vs. The xx "Intro" mashup, YouTube user soccerplaya514, 2010; 2) Frau Holle, “Ascending Souls,” 2017. Courtesy of Frau Holle, CC BY-NC 3.0 license.]