A group of Danish scientists have genetically modified cress to flush red when grown near landmines. The plant, which is sensitive to nitrogen dioxide -- a product released by landmines as they lie underground -- has been genetically altered to change color from green to red after approximately three weeks in contact with contaminated soil.
Red for landmine: A diagram from Aresa showing the process of TNT degrading to nitrogen dioxide which is detected by the GM tobacco plants, turning them red. Credit: Aresa Biotechnology
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