Soil liquefaction

A man is shown throwing a piece of wood from the ruins of a house in in Palu, Indonesia.

Indonesia’s double disaster exposes earthquake lessons not learned

The 7.5-magnitude earthquake that struck Indonesia on Sept. 28, triggered a tsunami and extensive soil liquefaction, killing 2,073 people according to the latest official estimate. Up to 5,000 more may be missing. All the destruction and loss of life have left many wondering why Indonesia — a country prone to earthquakes — wasn’t more prepared.