From the silent, suspenseful hum of a predator in the shadows to the piercing shriek of an impending apocalypse, a video game's sound design can be its most powerful weapon. We've all been there: a ...

For, according to one expert, most films we see of a nuclear blast use stock 'explosion' sound effects for the bang - and audio footage is few and far between.

The seismic monitors track the pressure and impact of the movement underwater rather than just the sound frequency, giving the CTBTO a better understanding of an explosion's impact.