When volcanoes were dead

Fifty and sixty years ago in geography classes, my wife and I learned there were no active, dangerous volcanoes remaining on Earth. The last new volcano had formed years before in a corn field in Mexico. All others were dead.

So, when an archaeologist or anthropologist or other studier of things ancient says “We know for a fact …,” I figure, “No you don’t.”

Occasionally a studier of old thing will speak truth: The more we discover, the more we don’t know.