Using chemistry to track supply chain authenticity

This feature in The Guardian newspaper profiles the work of Oritain, a firm that assesses whether the geographical origins of products such as tea, fish, beef, apples, cotton and wool match the claims made on their labels. This is possible because regions often have unique ratios of elements, which can then be detected in the product. The feature discusses how the technology has been used to detect fraud, as well as its limitations with regards to the environmental or social impacts of production.