(CNN) — Here's some background information about volcanoes, mountains that open downward to a reservoir of molten rock. Facts: More than 80% of the Earth's surface, both above and below sea level, is ...

Lava is molten rock from a volcano that reaches the Earth’s surface. Liquid rock below the Earth’s surface is referred to as magma. More than 50% of the world’s active volcanoes above sea level ...

Browne will present on his project, “Probing the subvolcanic magma plumbing systems of continental and oceanic basaltic volcanoes, examples from Medicine Lake volcano and the Axial Seamount.” ...