
I don't think I'm supposed to take any action or feel particularly alarmed after reading about this global mapping of urban subway microorganisms, but it is kind of neat nonetheless. A team of researchers recently spent over 3 years collecting "metagenomic samples" from the transit systems of 60 cities around the world. Everywhere from Stockholm's handrails to Shanghai's subway poles.
The process involved nearly 5,000 samples and the result is this research paper, providing a full atlas of the microbial strains that live throughout our subway systems. Supposedly, none of the findings are anything that we should be worried about though. So carry on riding the subway.
But it is interesting (and very geeky) to note that the researchers discovered something that they are calling a "core urban microbiome." What this means is that they identified 31 different species of bacteria that show up in pretty much all of the cities that they surveyed -- some 97% of their samples.
At the same time, each city, because of things like climate and geography, also has its own microbial profile. In fact, these profiles are so distinctive that the geneticist who lead the study is quoted in the New York Times saying that if you gave him a shoe that was a worn in a particular subway system, he could sequence it and tell you the city with 88% accuracy.
Is this neat or gross?
Photo by Sergey Zolkin on Unsplash


Benjamin Dachis and Rhys Godin of the C.D. Howe Institute have a new report out talking about the effect of COVID-19 on the future of public transit in Canadian cities. In it, they make the argument that public transit is a key enabler of the agglomeration economies that make cities so valuable. And right now, most people aren't using it (see above).
Why are agglomeration economies so important?
According to some studies, doubling the population of an urban area has tended to increase mean incomes by between 3-8%. In the Canadian context, similar research has found that people living in more populated regions (cities) tend to have incomes that are between 3-5% higher than those living in more rural areas. So when it comes to average incomes, bigger cities tend to be better. (Does Zoom change this? I'm not convinced.)
Of course, to make bigger cities function properly, you generally need public transit. And when you do have fast and reliable transit, that, they argue, is going to help drive the agglomeration economies which ultimately help to increase incomes. Because of this important relationship, Dachis and Godin argue that Canadian governments have a habit of systematically undervaluing the importance of transit investment.
Michael Bohmeyer is the founder of a Berlin-based startup called "Mein Grundeinkommen" or "My Basic Income." In the six years since he first asked for donations, his company has given more than 650 people a no strings attached stipend of 1,000 euros a month for one year.
The idea has been to test whether or not a basic income payment could, among other things, improve people's happiness and improve the way that governments manage their social welfare systems. According to this recent NY Times article, Germany spends almost a third of their GDP on social welfare.
Since founding "My Basic Income," Michael has gone on to publish a book and also partner with the German Institute for Economic Research in Berlin. And so far, his findings seem fairly positive. Instead of valuing the money itself, people seem to really value the sense of security that it brings.
Few people quit working, because a basic income is exactly that -- basic. Instead, people seem to be using it to do things like quit that job they hate in order to find a better one. The payment provides some downside protection and that can be empowering.
This is obviously not a new concept. It's been tested and even implemented in many places around the world, and it has become increasingly popular as an idea in recent years. So here are some additional data points. If you're interested in this topic, you may want to check out what Michael has been up to since 2014.
If you're interested in reading the full report, click here.
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