3 ms·

I am extremely skeptical of your claims re: London. Steam hasn't operated on the Underground in 115 years, and only ever on a small minority of lines.

• Miraste 4y ago
  I doubt it's because of steam train residue, but when I was on the Underground it turned all the mucus in my nose black for a day every time I rode it. From searching around, this seems to be a common occurrence for visitors. Air quality there is severely compromised. There's also the health and safety problem of its steadily rising temperatures, about which nothing appears to be being done or even considered.
  • bobthepanda 4y ago
    They are trying to install cooling at several stations where they deem it possible. The problem is that, generally speaking, Central London lacks spots where you could just punch a ventilation shaft downwards, and the stations are too tight to accommodate modern HVAC otherwise.