The results of a massive new DNA sequencing project on the New York City subway have just been published. And yup, there’s a lot of bacteria on the subway—though we know most of it is harmless. What’s really important, though, is what we don’t know about it.
The PathoMap project, which involved sampling turnstiles, benches, and keypads at 466 stations, found 15,152 life-forms in total, half of which were bacterial. The Wall Street Journal has created a fun, interactive microbial map of the subway out of the data, showing where on the lines the bacteria “associated with” everything from mozzarella cheese to staph infections was found.