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Scientists Are Changing Soil at a Molecular Level to Withstand Earthquakes

via MOTHERBOARD

When a powerful earthquake struck Sulawesi, Indonesia last year, something terrifying happened near the coastal city of Palu: an entire chunk of the ground turned to liquid, swallowing roads, cars, and hundreds to thousands of homes.

This phenomenon, known as liquefaction, occurs when wet, loosely-packed soil loses its structural integrity due to a sudden shock like an earthquake. Engineers typically rely on brute-force methods to mitigate its effects—fortifying structures with stone columns and grout; banging the ground with heavy weights. But now, a Portland State University-led team of scientists wants to re-engineer soils at the molecular level to prevent them from ever liquefying in the first place.

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