A new system to resist terrorist bombs smuggled onto aircraft has been tested in dramatic experiments. A device called FlyBag is designed to absorb the shockwaves and shrapnel caused by explosions. If security fails and a bomb reaches the luggage hold, the idea is that the blast would be safely contained. The trials - using old jets at Cotswolds Airport in Gloucestershire - showed that explosions on board caused no damage. The bag involves a novel mix of four different layers of material including one based on Kevlar, which is used in bullet-proof jackets. The idea is that the bag...