Opinion: I’m a volcanologist. Here’s what this Mauna Loa eruption will teach us

When Mauna Loa volcano on the island of Hawaii started erupting on Sunday night, many people were already waiting for it. For months, the scientists at the US Geological Survey (USGS) Hawaiian Volcano Observatory (HVO) have been noticing inflation of the ground and an increase in seismic activity at Mauna Loa, indicating the ascent of magma within the volcano’s plumbing system toward the surface.