Laser beams light on chemical warfare
3 July 2014 Last updated at 17:12 BST
Scientists have developed a technique that can detect hazardous chemicals in a fraction of a second.
The team at Heriot-Watt University have been firing ultrafast lasers at an object to create a chemical "fingerprint".
It is hoped the technique could be used to spot chemical and biological weapons on the battlefield without going near them.
BBC Scotland's science correspondent Kenneth Macdonald reports.