Added readings 2021-12-31. Happy new year!

readings.md

@@ -7,6 +7,56 @@ know and I should be able to recover it, or at worst remove it.
 
 ## 2021<a id="2021" name="2021"></a>
 
+### 2021-12-31 <a id="2021-12-31" name="2021-12-31"></a>
+
+- [What elements does a plant need to grow?](https://github.com/hydromisc/hydromisc/blob/master/doc/nutrient-design.md)
+- [propagator examples](https://github.com/qfpl/propagator-examples)
+- [A vulnerability postmortem](https://googleprojectzero.blogspot.com/2021/12/this-shouldnt-have-happened.html?m=1)
+- [Acquisition of Chess Knowledge in AlphaZero](https://en.chessbase.com/post/acquisition-of-chess-knowledge-in-alphazero)
+- [All Hail Dead Week](https://www.theatlantic.com/family/archive/2021/12/christmas-new-years-dead-week-romjul/621098/)
+- [Arithmetically equivalent Riemann Hypothesis](https://dept.math.lsa.umich.edu/~lagarias/doc/elementaryrh.pdf)
+- [Aurora borealis over Tromsø](https://twitter.com/NightLights_AM/status/1466294056535961601)
+- [Big Trouble in Little Rock](https://theintercept.com/2021/12/18/little-rock-police-chief-keith-humphrey/)
+- [Deep Leaf](https://twitter.com/mitchcohen/status/1476351601862483968/photo/1)
+- [Fireman 3rd Class Kenneth L. Jayne remains identified](https://www.newsday.com/long-island/suffolk/kenneth-jayne-pearl-harbor-remains-identified-1.24450912)
+- [Fireman 3rd Class Kenneth L. Jayne](https://dpaa-mil.sites.crmforce.mil/dpaaProfile?id=a0Jt000001EcbzZEAR)
+- [How SQLite Is Tested](https://www.sqlite.org/testing.html)
+- [How my lockdown obsession with Super Smash Bros led me to a vital epiphany](https://amp.theguardian.com/games/2021/dec/03/how-my-lockdown-obsession-with-super-smash-bros-led-me-to-an-esports-epiphany)
+- [I wish I'd self-published sooner](https://blog.alexellis.io/one-year-of-self-publishing/)
+- [In simple English, what does it mean to be transcendental?](https://blog.plover.com/math/se/transcendental.html)
+- [NASA's new sleeping bags](https://www.engadget.com/nasa-sleeping-bag-prevent-eyeball-squashing-083937316.html)
+- [Optimally packing equal-sized shapes into a shape](https://twitter.com/arborelia/status/1469801500088094725)
+- [Physicists detect signs of neutrinos at LHC](https://phys.org/news/2021-11-physicists-neutrinos-large-hadron-collider.html)
+- [Prophet Against Slavery: Benjamin Lay, A Graphic Novel](https://www.dsausa.org/democratic-left/from-slaveowners-to-abolitionists/)
+- [Reality has a surprising amount of detail](http://johnsalvatier.org/blog/2017/reality-has-a-surprising-amount-of-detail)
+- [Roman dodecahedrons](https://www.mentalfloss.com/article/514246/are-roman-dodecahedrons-worlds-most-mysterious-artifact)
+- [Saving the shuttle simulator](https://arstechnica.com/science/2021/12/saving-the-shuttle-simulator-it-was-an-artifact-that-needed-to-be-preserved/)
+- [Solar powered Low←Tech Magazine](https://solar.lowtechmagazine.com/power.html)
+- [Tarrey Town in Animal Crossing](https://np.reddit.com/r/Breath_of_the_Wild/comments/rhq86m/heres_my_recreation_of_the_tarrey_town_side_quest/)
+- [The 8000th Busy Beaver is indepdendent of ZFC](https://scottaaronson.blog/?p=2725)
+- [The Hitchhiker's Guide to the Galaxy radio show](https://www.bbc.co.uk/programmes/b03v379k)
+- [The Internet Has a Rat Poison Problem](https://www.audubon.org/magazine/winter-2021/the-internet-has-rat-poison-problem)
+- [The Thinker and The Prover](https://twitter.com/jposhaughnessy/status/1343371350493319169)
+- [The fraud supply chain](https://bam.kalzumeus.com/archive/the-fraud-supply-chain/)
+- [The solar system is full of brines](https://www.theatlantic.com/science/archive/2021/11/turkey-brine-aliens-thanksgiving/620797/)
+- [Tiny tardigrades walk like much bigger insects](https://arstechnica.com/science/2021/12/nifty-biomechanics-of-adorable-water-bears-lumbering-gait-may-inspire-microrobots/)
+- [Uncomfortable Truths in Software Engineering](https://buttondown.email/hillelwayne/archive/uncomfortable-truths-in-software-engineering/)
+- [Underrated reasons to be thankful](https://dynomight.net/thanks/)
+- [WWV and WWVH](https://tf.nist.gov/stations/iform.html)
+- [What is an "elegant" proof?](https://web.stanford.edu/~truax/)
+- [Where Is Webb](https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html?units=metric)
+- [Who is the Most Accurate Chess Champion?](https://lichess.org/blog/YafSBxEAACIAr0ZA/exact-exacting-who-is-the-most-accurate-world-champion)
+- [Why Can’t You Design Noise in Frequency Space?](https://blog.demofox.org/2021/12/29/why-cant-you-design-noise-in-frequency-space/)
+- [Why Paper Jams Persist](https://www.newyorker.com/magazine/2018/02/12/why-paper-jams-persist)
+- [Why thieves love to steal catalytic converters](https://thehustle.co/why-thieves-love-to-steal-catalytic-converters/amp/)
+- [macOS setup coming from linux](https://hookrace.net/blog/macos-setup/)
+- [vertiwalk](https://www.vertiwalk.com/)
+- [Bubble chamber](https://en.wikipedia.org/wiki/Bubble_chamber)
+- [Cascadia](https://en.wikipedia.org/wiki/Cascadia_(independence_movement))
+- [Dancing plague of 1518](https://en.wikipedia.org/wiki/Dancing_plague_of_1518)
+- [WWVH](https://en.wikipedia.org/wiki/WWVH)
+- [WWV](https://en.wikipedia.org/wiki/WWV_(radio_station))
+
 ### 2021-11-15 <a id="2021-11-15" name="2021-11-15"></a>
 
 - [The Story of Mel](http://www.catb.org/jargon/html/story-of-mel.html)