Empiricist League #16 meeting at Union Hall on The Hidden DNA of NYC

OK this looks like it will be really really interesting.  Laurie Garrett sent me a link to this announcment about a meeting of the Empiricist League in New York: What are the 15,000 microscopic lifeforms that live on the subway? How disgusting are the contaminants in the Gowanus Canal? Can we use technology to stop …