Shelley Fan in Singularity Hub:
The first time I heard about the Great Pacific Garbage Patch, I thought it was a bad joke.
My incredulity soon turned to horror when I realized it’s real. The garbage patch, also known as the Pacific trash vortex, is a massive collection of debris in the North Pacific Ocean. Although made up of all sorts of human-generated waste, the main components are tiny pieces of microplastic. From straws to trash bags, we use an astonishing amount of plastic—which often ends up in delicate ocean (and other) ecosystems. According to the Center for Biological Diversity, a nonprofit organization for protecting endangered species based in Arizona, at current rates plastic is set to outweigh all fish in the ocean by 2050.
A new study wants to turn the tide with synthetic biology. By engineering genetic circuits into a bacterial “consortium,” the team reprogrammed two strains to not only destroy polluting plastics—but to also transform the toxic waste into useful biodegradable material. Environmentally friendly and versatile, these upcycled plastics can be used to manufacture foams, adhesives, or even nylon—all without further taxing the environment. The strategy isn’t just limited to the polyethylene terephthalate (PET)—one of the most common types of plastics—tested in the study, said the authors. “The underlying concept and strategies are potentially applicable…to other types of plastics” and could begin lighting the way toward “a sustainable bioeconomy.”
More here.

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There’s a fun math problem here about how much space you need to turn your car around, and mathematicians have been working on an idealized version of it for over 100 years. It started in 1917 when the Japanese mathematician Sōichi Kakeya posed a problem that sounds a little like our traffic jam. Suppose you’ve got an infinitely thin needle of length 1. What’s the area of the smallest region in which you can turn the needle 180 degrees and return it to its original position? This is known as Kakeya’s needle problem, and mathematicians are still studying variations of it. Let’s take a look at the simple geometry that makes Kakeya’s needle problem so interesting and surprising.
China’s property sector is the
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Brain development is a carefully choreographed dance. Neurons develop specialized functions and, in small hops, move through the brain to get into the correct position. The chemical signals coursing through the resulting network allow animals to think, feel, and live. In neurodevelopmental disorders (NDD), however, hundreds of mutations in the DNA can interrupt this process. But scientists still do not know how each of these mutations interrupts the neurons’ precise differentiation or migration patterns. Studying these defects directly in embryos or newborns is too dangerous, and other animal models may deviate from human development.
I WAS AMONG MANY THAIS
Consider how you hold a piece of chalk. Not by the handle: it doesn’t have one. Or, if it does, that handle is of the chalk’s own substance, flesh of its flesh, distinguishable only because it is the bit left in your hand when you can’t write anymore. A useless nub, or stub, or butt. Its persistence is a faint embarrassment, a remainder you don’t know what to do with—maybe you should stuff it in your pocket, or leave it in the tray with the erasers, or drop it on the floor and grind it into dust with your heel. It’s a waste, surely, just to throw it out. But it cannot be grafted onto another piece of chalk, not without gratuitous ingenuity, nor can it be used to hold anything else. It’s like the end of a pencil or of a filterless cigarette. Life is a midden of such abandoned handles. You didn’t even know they were handles, until they lost their grip and you were left holding them in a pinch, a pinch that can narrow, without your noticing, to contempt.
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It’s pretty clear that, on a direct one-v-one cage match, an asexual organism would have much better fitness than a similarly-shaped sexual organism. And yet, all the macroscopic species, including ourselves, do it. What gives?
Mr. Trump and others on the right deride the new norms as “woke,” a term with strongly pejorative connotations. I prefer a more neutral phrase, which emphasizes that this ideology focuses on the role that groups play in society and draws on a variety of intellectual influences such as postmodernism, postcolonialism and critical race theory: the “identity synthesis.”
In the quiet corner of a dimly lit hospice room, I stood beside my friend Diane and her son Hans, also one of my dearest friends, who was journeying home. I told Diane to rest as she moved over, and I continued holding Hans’ hand, as I watched Diane rest. The room was filled with a sense of peace and acceptance. At this moment, I realized I was no longer a hospice volunteer. I was living my purpose as a death doula, accompanying souls as they gracefully depart this world. My death doula journey began several years ago when I started as a hospice volunteer. I had no experience in end-of-life care, but I did possess a strong desire to become a better human being.
With giant pincers and rough, spider-like legs, Caribbean king crabs don’t look like your typical heroes. Yet these crustaceans may be key to solving one of the world’s most pressing environmental problems: the decline of coral reefs. In recent decades, warming seas, diseases, and other threats have wiped out
BRIAN WILSON HAS BEEN DEAF IN HIS RIGHT EAR since childhood. He mixed the Beach Boys’ albums, including Pet Sounds, in mono because he couldn’t hear them any other way. “It was sort of like being robbed of something, some pleasure of life,” he said in 1976. “I’m not complaining, but it’s a little bit of a setback.” I think the deafness might explain why the left side of his mouth reaches up when he speaks, like he’s addressing his good ear. (The affect has become more pronounced with age, but it’s visible in footage from the 1960s.) “I got one ear left and your big loud voice is killin’ it,” Brian yelled at his father and former band manager, Murry Wilson, during 1965’s “Help Me, Rhonda” recording session. Murry, drunk but not untrue to his sober form, had been berating the guys for almost forty minutes as they tried to get down the vocals.
Zadie Smith’s first historical novel spins a tangled web around the knotty case of the Tichborne claimant, a long-running legal saga that divided Victorian Britain. The book’s title, The Fraud, ostensibly refers to Arthur Orton, a butcher who, in 1866, claimed (falsely, in the eyes of the law) that he was Sir Roger Tichborne, an aristocratic heir long presumed lost at sea. Yet in Smith’s crowded narrative – crafted to imply that the much-debated phenomena of polarisation and disinformation are hardly new – the frauds multiply, the titular slur clinging to everything from writing novels (for Smith, always a suspicious enterprise) to neoliberal economics.