Laser beams light on chemical warfare
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.
03 Jul 2014