It might have been better if they had worked this out before turning it on.

It is off for repairs at the moment, and despite the scary headline, what the scientists are actually saying is that while any black holes produced may last longer than they first thought, the chances of any of them surviving for long enough to cause a problem is pretty close to zero.

But then, when you are talking about the end of the world, pretty close to zero is not really quite good enough.