[richardwigley]

There a smell from the explosives - it's quicker to cover an area for the smell-ee than with a metal detector. ------ "After a few months underground, almost all landmines leak vapours that betray the presence of explosives."

http://www.economist.com/news/technology-quarterly/21603239-...

[sukuriant]

Indeed, and it's awesome. It's just impressive that we can detect that odor better with dogs than with some sort of engineered odor detector