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Why explosives detectors still can’t beat a dog’s nose

The oldest technology for detecting trace amounts of materials remains the best.
by Haley Cohen Gilliland

For nearly as long as armies have fought one another, they have enlisted animals to help.

Horses, especially, were decisive for millennia. As historian Morris Rossabi has written of the Mongol conquest of Asia, “Mobility and surprise characterized the military expeditions led by Genghis Khan and his commanders, and the horse was crucial for such tactics and strategy.

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