Cool tube

One of the reasons I love cities is seeing how they cope with all the people. On the surface, in London at least, all seems quite normal and even habitable. Underground is a different story, with thousands of miles of pipes and cables and sewers and dead bodies and all the crap we don’t want to see. We can fly to the moon and find new (old) rivers on Mars, but there’s one aspect of London living we can’t yet alter: the heat on the tube. I was amused to hear that Boris Johnson, the London mayor

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