I woke up twice at night when I lived next to the railway in London.<p>The first time was at 06:01, when there was a deep rumbling. I assumed a freight train had stopped outside for some reason, and was now accelerating hard.<p>The second time was a short while later, when my bedroom smelled like a bus depot and the sky had turned purple.<p>It turned out a fuel storage depot had exploded: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Buncefield_fire" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Buncefield_fire</a><p>I fled, to my university library in central London, which fortunately wasn&#x27;t covered in smoke.