“In addition to being a key resource for food security and human sustainability, soils contain many physical, chemical and biological characteristics which can potentially be of great use to the investigative and reconstructive processes

Soil isn’t just dirt: it’s the ideal trace material, as it sticks when wet and can be highly distinctive. That’s what Professor Lorna Dawson, Head of Soil Forensic Science at the James Hutton Institute in Aberdeen, said after providing evidence in court in the case built by Wiltshire Police against Christopher Halliwell in a long-running investigation into the abduction and murders of Rebecca Godden in 2002 and Sian O’Callaghan in 2011.

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This article was originally posted by The James Hutton Institute