A genetically engineered plant that detects landmines in soil by changing colour could prevent thousands of deaths and injuries by signalling where explosives are concealed.
The plant, a modified version of thale cress (Arabidopsis thaliana), is sensitive to nitrogen dioxide gas, which is released by underground landmines. The leaves of the plant change from green to red after three to five weeks of growth in the presence of this gas. “They are easy to spot,” says Carsten Meier of the University of Copenhagen, Denmark, who served as scientific adviser to Aresa, the Danish company that developed the plant.
Here is the full story. Note that the technology is not yet fully proven.
On a separate note, it appears that simply putting a tea strainer (mesh cylinder) in your neck could stop a large number of strokes.