Commuters, residents and tourists who take to social media during warm months to complain about sweltering subway systems in New York, Boston and London should feel vindicated — new research says they aren't alone.
As temperatures rise aboveground, the number of subway riders reporting uncomfortable heat belowground increases, according to a new study in the journal Nature Cities on Tuesday. This could worsen as climate change, driven by the burning of fossil fuels, makes for a hotter planet.
