London Underground

London Underground poisoned by metal particles

(ORDO NEWS) — The particles found are so small that they were probably underestimated in the works on the pollution of the world‘s oldest subway system. According to scientists from the University of Cambridge, the London Underground is polluted with ultra-fine metal particles, small enough to enter the human bloodstream. The researchers conducted a new type of pollution analysis using magnetism to study dust samples from underground ticket offices, platforms…