How Do Neurons Work?

Jennifer Zieba in The Scientist:

Nerve cells, or neurons, are the basic functional units of the nervous system. Multiple interconnected neurons form a neural circuit and use electrical and chemical signals to quickly transmit information throughout an organism. The nervous system is broadly divided into two sections: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord whereas the PNS includes neurons that branch off from the CNS and connect to the rest of the body. In general, neurons in the PNS receive and carry signals in the body while neurons in the CNS analyze information.

…Typically, neurons share information by producing electrical events called action potentials, also known as nerve impulses, which involve rapid changes in voltage across their membrane. When a neuron’s dendrite or cell body receives enough inputs from other neurons via chemical or electrical synapses and a particular threshold for that neuron is exceeded, the neuron is triggered to send an action potential across its axon.

More here.

Wednesday Poem

The Story of Keys

If you would give me
the key to your house
I would think of it
as a one-dimensional
mountain range.
I would hold it up
to the sky
and study how clouds
drink in its valleys.
Think of it
as a tiny file
that cuts through
vertical shadows.
The door of your house
would be a rectangle of light

that shuts behind me
trapping the moon
by the coattails.
I would no longer need
the twisted path
that brought me to you.
It would disappear
along with the forest
that popped up
on springs and hinges.
And the stagehands
and the roadies of my dreams
could put away their props —
cups, pools, musical perfumes
darker than your hair.

Entering for the first time
would be as if I never left.
And I would tell you
the story of keys.
They were made long before
the invention of doors.
Although no one knew their function,
wise men suspected their importance.
Carefully, they would place them
into the cracks of tree bark and twist.

Anything can be a key: a piece of wire
a safety pin, laughter.

by Richard Garcia
from
Touching the Fire
Anchor Books, 1998

Tuesday, December 20, 2022

Stop the Term-Creation Meaning-Kidnap!

Sarah M. Brownsberger in The Hedgehog Review:

We wondered: Were we condensing phrases to terms because we were typing with our thumbs? Had we come to expect listeners and readers to autocomplete and fill in syntax? Had work jargon saturated private life because Americans worked such long hours? Had a generation told by daycare providers that they were good toy-picker-uppers grown up to make a norm of behaviorist verbing? Had the passive constructions by which one avoids assigning blame (or credit) in the workplace made naming who did what seem rude?

Or did sounding technical have a political flavor? Did it announce, “I believe that science is real,” as some lawn signs in our new neighborhood did, along with other tenets of what apparently was a new, progressive Nicene Creed?

Or were people just preening, using pseudoterms to sound savvy?

What did talking like this do?

More here.

New food technologies could release 80% of the world’s farmland back to nature

Chris D Thomas, Jack Hatfield, and Katie Noble in The Conversation:

Fortunately, a whole raft of new technologies is being developed that make a system-wide revolution in food production feasible. According to recent research by one of us (Chris), this transformation could meet increased global food demands by a growing human population on less than 20% of the world’s existing farmland. Or in other words, these technologies could release at least 80% of existing farmland from agriculture in about a century.

Around four-fifths of the land used for human food production is allocated to meat and dairy, including both range lands and crops specifically grown to feed livestock. Add up the whole of India, South Africa, France and Spain and you have the amount of land devoted to crops that are then fed to livestock.

More here.

Ghana, you were doing so well!

Noah Smith in Noahpinion:

So, unfortunately, it’s time for another one of these. By which I mean both a “[Country], you were doing so well!” post, and a “Why [country] is having an economic crisis” post. I thought Ghana was going to be one of my development success stories, and then before I got around to writing about, its economy went into a crisis. The basic story here is that Ghana just defaulted on most of its external debt, and is experiencing very high inflation, and is going to have to be bailed out by the IMF. That’s going to result in financial and economic chaos in the country, a year or two of depressed economic activity, and hardship for the Ghanaian people.

I’m sure Ghana will eventually bounce back. And as I’ll explain, when we look at the particulars of how this crisis has played out, we see that the government is being smarter than many. But overall this is pretty disappointing. So first I’ll talk a bit about why it’s so disappointing, and then move on to the crisis itself.

More here.

The Waste Land: A Biography of a Poem

Alex Clark in The Guardian:

A century ago, a man with a double life published one of the most celebrated, anthologised and dissected poems in English literature. TS Eliot spent six days a week at the offices of Lloyds bank and crammed the business of poetry and literary criticism into the evenings and Sundays. This allowed him to write The Waste Land, a densely allusive work that drew on Ovid, Dante, Shakespeare, Jacobean tragedy, tarot and the Upanishads to create a dazzling portrait of both the ruins of postwar Europe and the inner alienation of modernity. But it was not, as Matthew Hollis’s captivatingly exhaustive “biography of a poem” demonstrates, a work conceived or executed in isolation; and chief among Eliot’s enablers were his wife, Vivien, and his fellow poet and indefatigable literary fixer, Ezra Pound, who looms almost as large in the book as does Eliot himself.

One of the numerous illuminating anecdotes of their entwined lives sees TS Eliot deliver a parcel to James Joyce in Paris at their first ever meeting. Entrusted with the gift by Pound but forbidden from knowing its contents, Eliot, alongside his fellow traveller Wyndham Lewis, ceremoniously presented the package as the trio assembled at a Left Bank hotel and waited as Joyce struggled with its strings until, for want of a knife, a pair of nail scissors was found. Within, a clearly second-hand pair of brown shoes, prompted by Pound’s anxiety that Joyce, whom he liked and admired, was short of funds and in need of sturdy footwear. “‘Oh!’ said Joyce faintly, and sat down.” That night the Château Latour flowed, and subsequently a humiliated Joyce settled every bill.

More here.

Argentina vs. France

Ed Caesar at The New Yorker:

Pick the best moment of the match. It seems impossible. The Lionel Messi flick pass that oiled the move that led to Argentina’s beautiful second goal? Sumptuous. Try another. Kylian Mbappé’s volleyed finish from the edge of the penalty area, to take the contest to 2–2, and extra time? Dazzling. One more, or perhaps two? The rampant French attack in the final minutes of injury time, with the match tied at 3–3, that preceded a one-footed save by Argentina’s goalkeeper, Emiliano Martínez? The lightning Argentina counterattack that immediately followed it, and then the missed header to win the match? I think I held my breath for a minute.

This was the best World Cup final I have ever seen, that perhaps anyone has ever seen—a match stuffed full of so many remarkable incidents, so much tension, such dramatic momentum swings, such joy. It was soccer played con brio.

more here.

The Greatest Game Ever Played

Brian Phillips at The Ringer:

OK, I’m going to do my best here. But I need you to know exactly what you are getting, as Joan Didion once wrote, and what you are getting is a man who cannot feel his face. My hands are still shaking. There are tears in my eyes. I’m writing this less than 10 minutes after the end of the greatest World Cup final ever, which Lionel Messi’s Argentina won on penalties over Kylian Mbappé’s France, and I do not believe it is recency bias that makes me think that this match was the single most thrilling sporting event I have ever witnessed. Every game is a story. And when you consider the stakes, the performances, the history in the balance, the refusal of either side to lose, the moments of astonishing play, the sudden reversals and wild swings of momentum, the knife’s-edge uncertainty of the outcome, and the epochal significance of a result that brought the career of the world’s best player to an almost magically perfect climax, it is hard to imagine a story more overwhelming or more satisfying than this one.

more here.

Naked Mole Rats Defy Aging

Eve Herold in Leap:

Rochelle “Shelley” Buffenstein has one of the world’s largest, if not the largest, lab-dwelling colonies of the naked mole rat. (No one has done a worldwide tabulation, but she has 4,500 of them.) Buffenstein has spent decades studying the little subterranean-dwelling rodents. Over the years, she and her colleagues have uncovered one surprising discovery after another, which has led them to re-orient the whole field of anti-aging research.

Naked mole rats defy everything we thought we knew about aging. These strange little rodents from arid regions of Africa, such as Kenya, Ethiopia and Somalia, live up to ten times longer than their size would suggest. And unlike virtually every other animal, they don’t lose physical or cognitive abilities with age, and even retain their fertility up until the end of life. They appear to have active defenses against the ravages of time, suggesting that aging may not be inevitable. Could these unusual creatures teach humans how to extend life and ameliorate aging?

More here.

Tuesday Poem

Artichoke

—from: Elemental Odes

The artichoke
of delicate heart
erect
in its battle-dress, builds
its minimal cupola
keeps
stark
in its scallop of
scales.
Around it
demoniac vegetables
bristle their thicknesses,
devise tendrils and belfries,
the bulb’s agitations;
while under the subsoil
the carrot
sleeps sound in its
rusty mustaches.
Runner and filaments
bleach in the vineyards,
whereupon rise the vines.
The sedulous cabbage
arranges
its petticoats;
oregano
sweetens a world;
and the artichoke
dulcetly there in the gardenplot,
armed for a skirmish,
goes proud
in its pomegranate
burnishes.

Pablo Neruda
from Five Decades: Poems 1925-1970
translation: Ben Bellitt
Grove Press, 1974

Sunday, December 18, 2022

The Republican Party Is in a Strange Place

From The Atlantic:

Leibovich: The Republican Party is in a strange place. The 2022-midterm losses stunned the GOP and created calls for a 2024 challenger to Donald Trump. But can the party move past the man who dominated it for six years? Now we’re actually going on seven years, almost eight years, right? It just keeps going and going. So, hi, Elaina—tell us everything.

Plott: Yeah. As I sit here, I am reflecting on the most recent midterm elections, and I would say that, for me, the biggest takeaway and what I’d love to hear your thoughts on is: When we were counting down to see if somebody like Kari Lake in Arizona, also someone like Blake Masters in Arizona, would end up pulling it out for the Republicans, what that would say about the party. Masters and Lake, of course, were huge proponents of the stolen-election theory. But it didn’t work in the end. And I think the kind of immediate takeaway, at least that I was seeing among centrist-minded people but also people on the right who are vaguely anti-Trump, was that this was a lesson that the party is very ready to move on from Donald Trump.

More here.

Where Romantic Poetry in a Fading Language Draws Stadium Crowds

Mujib Mashal in The New York Times:

The four designated stages inside the crowded stadium complex in the heart of the busy capital weren’t enough. So the poetry lovers also took to the footpaths and the spaces in between, turning them into impromptu open-mic platforms for India’s embattled language of love.

…That more than 300,000 people came to celebrate Urdu poetry during the three-day festival this month in New Delhi was testament to the peculiar reality of the language in India. For centuries, Urdu was a prominent language of culture and poetry in India, at times promoted by Mughal rulers. Its literature and journalism — often advanced by writers who rebelled against religious dogma — played important roles in the country’s independence struggle against British colonial rule and in the spread of socialist fervor across the subcontinent later in the 20th century.

In more recent decades, the language has faced dual threats from communal politics and the quest for economic prosperity. Urdu is now stigmatized as foreign, the language of India’s archrival, Pakistan. Families increasingly prefer to enroll children in schools that teach English and other Indian languages better suited for the job market.

More here.

Sunday Poem

With so many tellers a tale never remains faithful to what it was.
It becomes a game.
.. —Roshi Bob

Telephone

A mockingbird
perched on the hood
of a payphone
half-buried in a hedge
of wild rose
and heard it ring

The clapper ball
trilled between
brass gongs
for two seconds
then wind
and then again

With head cocked
the bird took note
absorbed the ringing
deep in its throat
and frothed
an ebullient song

The leitmotif
the bright alarm
recurred in a run
from hawk
to meadowlark
from May to early June

The ringing spread
from syrinx to syrinx
from Kiowa
to Comanche to Clark
till someone

finally picked it up
and heard a voice
on the other end
say Konza
or Consez or Kansa
which the French trappers
heard as Kaw

which is only the sound
of a word for wind
then only the sound of wind.

by Devin Johnston
from
Poetry Magazine, 2014

On Fermentation, Distillation, and Sobriety

Justin E. H. Smith in Berfrois:

On the evening of December 2, 2020, around 10pm, I swallowed the last of what must have been multiple lifetimes’ worth of mouthsful of red wine. Unlike the partisans of AA, I am confident in saying that I will never again in my life consume alcohol. There are things I just don’t do anymore. I am no less morally certain, for example, that I will never go sky-diving. The version of me that believed a good life is constituted from such “fun” diversions as this died a long time ago. Far from having a “bucket list”, I now understand that the proper conduct of the second half of life is to approach something like what the Tibetan Buddhists call tukdam, to do less and less, but only to sit and meditate, and to breathe once every century or so, so that by the time you actually die there will be scarcely any change to register. I can picture a future not so far from now when, to the question, “Is he alive or dead?”, the only fitting response will be: “Who can say?” You might be able to jolt me into some new movement, like a fly removed from its long sleep in a jar of talc that flicks its wing in reluctant palingenesis (the phenomenon of being “born again”, which by the law of nomen est omen has long tricked me into thinking that Sarah Palin must be destined for a comeback); then again you might not. So, yeah, sky-diving’s out, along with drinking. The version of me that drank died two years ago. We’re coming up on the two-year anniversary of his death.

More here.

Cambridge PhD student solves 2,500-year-old Sanskrit problem

Sam Russell in The Independent:

A grammatical problem which has perplexed scholars since the 5th century BC has been solved by a Cambridge University student and could “revolutionise the study of Sanskrit”, a professor has said.

Indian PhD student Rishi Rajpopat, 27, decoded a rule taught by Panini, a master of the ancient Sanskrit language who lived around two-and-a-half-thousand years ago.

Sanskrit is only spoken in India by an estimated 25,000 people out of a population of more than one billion, Cambridge University said.

But it is the sacred language of Hinduism and the medium through which much of India’s greatest science, philosophy, poetry and other secular literature have been communicated for centuries.

More here.