Gamma-Ray Bursts explained

I have, from time to time, mentioned the potentially lethal, if spectacular, phenomenon known as a Gamma-Ray Burst in my occasional science posts.  By coincidence, the BBC have online digestible clips of past Horizon programmes.  Including this informative clip from 2001 explaining Gamma-Ray Bursts in stellar nurseries, with a suitably ominous narration.  Enjoy!  And, let’s be careful out there…