London Underground’s hot air is warming more than 1,000 homes in Islington

More than 1,000 homes in north London are being warmed by the hot air produced in the city’s notoriously sweltering underground tunnels.   Enormous fans installed at the site of the abandoned City Road Underground station on the Northern Line are sucking the stuffy air upwards.  A six-story shaft funnels the warm air over pipes and … Read more