It Turns Out That Bubonic Plague Has a Silver Lining

Earlier today, Michael McCormick presented a paper at the annual meeting of the Medieval Academy of America. It was published several months ago, but I only found out about it today via a reader on Twitter, which is one of the reasons I like Twitter in spite of everything. The paper presents the results of a super-advanced ice core analysis:

Ultra-high resolution sampling of this ice core (~120 μm, allowing ~550 measurements within the year dated ~1300 C.E.) was produced using the Climate Change Institute’s (CCI at the University of Maine) W. M. Keck Laser Ice Facility laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) [Sneed et al., 2015]. This new method allowed us to count highly thinned annual layers previously not detectable by conventional cm-resolution analyses.

Got it? Good. The upshot is that the researchers could determine lead concentration levels in Europe down to the individual year. Here they are:

It turns out that lead has been poisoning Europe for at least 2,000 years, with one notable exception: the few years during and after the Black Death. Apparently the plague killed off all the lead miners, and for a period of a decade or two ambient lead levels plummeted to low levels.

And now for some rank speculation. Check out this paragraph from Wikipedia about the origins of the Renaissance:

One theory that has been advanced is that the devastation in Florence caused by the Black Death, which hit Europe between 1348 and 1350, resulted in a shift in the world view of people in 14th-century Italy. Italy was particularly badly hit by the plague, and it has been speculated that the resulting familiarity with death caused thinkers to dwell more on their lives on Earth, rather than on spirituality and the afterlife. It has also been argued that the Black Death prompted a new wave of piety, manifested in the sponsorship of religious works of art.

Oh please. Maybe it caused scholars to think more about their lives on earth. Wait, no. Maybe it made them more pious. This is just post-hoc folderol.

Here’s my theory: Lead levels plummeted from about 1350-1370, and children born during those years entered adulthood around 1370-1390. I propose that they were smarter and more focused than your average medieval scholar,¹ and this extra IQ boost from the plague is the real origin of the Renaissance. Generation P gave it enough of a kickstart that it then kept going of its own accord even after lead concentrations returned to their previous levels.

As you can see from the chart, we have curbed the disastrous lead levels of the late 20th century² and are now down to the levels of about 1700 or so. But we still have a ways to go if we want to kick off a new renaissance of our own. Glory awaits us if we’d only spend a few billion dollars to get rid of lead once and for all.

¹Also less likely to pursue a life of crime, presumably.

²Hooray for the EPA!

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Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

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SIX TRUTHS

Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

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