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Scientists uncover extreme life inside the Arctic ice

news.ycombinator.com Unknown 2025-09-19 01:30:47

In brief Researchers studied single-celled algae, called diatoms, from the Arctic that were previously assumed to be hibernating in the ice and found they were actually quite active. This activity, which continued when temperatures dropped to -15 C, is the coldest-ever movement recorded for a eukaryotic cell. The diatoms move through a type of gliding, which is enabled by a combination of mucus and molecular motors that are similar to systems seen in human muscles. Given how abundant these di

Topics: arctic diatoms ice lab research

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La-Proteina

news.ycombinator.com Unknown 2025-09-21 18:43:58

La-Proteina: Atomistic Protein Generation via Partially Latent Flow Matching Abstract. Recently, many generative models for de novo protein structure design have emerged. Yet, only few tackle the difficult task of directly generating fully atomistic structures jointly with the underlying amino acid sequence. This is challenging, for instance, because the model must reason over side chains that change in length during generation. We introduce La-Proteina for atomistic protein design based on a n

Topics: atom model models motif yaml

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Scientists Stunned as Tiny Algae Keep Moving Inside Arctic Ice

gizmodo.com Gayoung Lee 2025-09-30 05:05:30

Scientists know that microbial life can survive under some extreme conditions—including, hopefully, harsh Martian weather. But new research suggests that one particular microbe, an algal species found in Arctic ice, isn’t as immobile as it was previously believed. They’re surprisingly active, gliding across—and even within—their frigid stomping grounds. In a Proceedings of the National Academy of Sciences paper published September 9, researchers explained that ice diatoms—single-celled algae wi

Topics: arctic diatoms extreme ice researchers

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C++: Strongly Happens Before?

news.ycombinator.com Unknown 2025-10-14 01:54:37

Strongly Happens Before? It started innocently enough. I just wanted to brush up on C++ memory orderings. It’s been a while since I last stared into the abyss of std::atomic , so I figured, why not revisit some good ol’ std::memory_order mayhem? Then I saw it. Strongly happens before. Wait, what? When did we get a stronger version of happens before? Turns out, it has been there for quite some time (since C++20 in fact), and it’s actually solving a very real problem in the memory model. If yo

Topics: atomic happens order thread write

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Shared_ptr<T>: the (not always) atomic reference counted smart pointer (2019)

news.ycombinator.com Unknown 2025-10-13 16:34:13

shared_ptr<T>: the (not always) atomic reference counted smart pointer Introduction This is a write-up of the “behavioral analysis” of shared_ptr<T> reference count in GNU’s libstdc++. This smart pointer is used to share references to the same underlaying pointer. The mechanism beneath works by tracking the amount of references through a reference count so the pointer gets freed only after the last reference is destructed. It is usually used in multi-threaded programs (in conjunction with oth

Topics: atomic mov ptr rax rbp

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A statistical analysis of Rotten Tomatoes

news.ycombinator.com Daniel Parris 2025-11-02 09:10:07

Intro: Why Is Everything "Certified Fresh"? I stayed in a hotel recently, which means I watched cable television, which means I consumed commercials that I could not skip—and some of these commercials advertised upcoming movie releases. Promo after promo, I noticed an unmistakable pattern: every film was "Certified Fresh" on Rotten Tomatoes, with this seal of approval serving as the ad's climactic selling point. After five days of "Certified Fresh" movie propaganda, I began to grow suspicious.

Topics: data fresh rotten tomatoes tomatometer

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This quantum radar could image buried objects

technologyreview.com Sophia Chen 2025-11-24 02:00:00

The glass cell that serves as the radar’s quantum component is full of cesium atoms kept at room temperature. The researchers use lasers to get each individual cesium atom to swell to nearly the size of a bacterium, about 10,000 times bigger than the usual size. Atoms in this bloated condition are called Rydberg atoms. When incoming radio waves hit Rydberg atoms, they disturb the distribution of electrons around their nuclei. Researchers can detect the disturbance by shining lasers on the atoms

Topics: atoms radar radio researchers rydberg

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First-Ever Look at Exploding Molecules Reveals Their Quantum Secrets

gizmodo.com Gayoung Lee 2025-11-24 08:05:43

In the quantum world, molecules are always on the move. And for the first time ever, scientists have directly captured these tiny quantum dances in action—and they did so by blowing them up real good. Even at absolute zero, individual particles constantly vibrate without a fixed position, a phenomenon referred to as zero-point motion. In a paper published August 7 in Science, researchers at European XFEL harnessed this behavior for the 2-iodopyridine molecule, which consists of 11 atoms. By bla

Topics: atoms molecule molecules motion quantum

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The History and Physics of the Atomic Bomb

wired.com Luca Nardi 2025-12-02 03:00:00

In 1938, Italian physicist Enrico Fermi, who had fled to New York to escape fascism, discovered a material in which a process of this type occurred: uranium. Fearing that the Nazis might also discover this element’s capability of producing a chain reaction, the Manhattan Project was born in 1940, a secret program for the development of nuclear weapons led by Arthur Compton. Compton formed a research group, which also included Fermi and Szilard, that would continue to conduct experiments on nucle

Topics: atoms bomb explosion fission nuclear

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Life After the Atomic Blast, as Told by Hiroshima’s Survivors

wired.com Elizabeth Chappell 2025-12-02 03:11:37

THIS ARTICLE IS republished from The Conversation under a Creative Commons license. “I’m not sure if it was the effect of the atomic bomb, but I have always had a weak body, and when I was born, the doctor said I wouldn’t last more than three days.” These are the words of Kazumi Kuwahara, a third-generation hibakusha—a survivor of the atomic bombing of Hiroshima and Nagasaki in Japan 80 years ago. Kuwahara, who still lives in Hiroshima, was in London on May 6 this year to give a speech at a V

Topics: atomic grandmother hibakusha hiroshima kuwahara

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Chris Curry interviewed by Your Computer magazine (1981)

news.ycombinator.com John Paul Wohlscheid 2025-11-30 15:53:46

from the October 1981 issue of Your Computer magazine Chris Curry's Cambridge company, Acorn, is beginning to emerge as one of the strongest personal computer firms in Britain. Its main product, the Acorn Atom, has proved both popular and reliable. The company won the coveted contract to design and build the computer to be marketed by the BBC and accompany the BBC's planned computer literacy series. Chris Curry talks to Duncan Scot. -------- The ATOM computer is one of the few approved by the

Topics: acorn atom bbc computer curry

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Double-slit experiment holds up when stripped to its quantum essentials

news.ycombinator.com Jennifer Chu 2025-12-04 08:00:19

MIT physicists have performed an idealized version of one of the most famous experiments in quantum physics. Their findings demonstrate, with atomic-level precision, the dual yet evasive nature of light. They also happen to confirm that Albert Einstein was wrong about this particular quantum scenario. The experiment in question is the double-slit experiment, which was first performed in 1801 by the British scholar Thomas Young to show how light behaves as a wave. Today, with the formulation of

Topics: atoms experiment light photon slit

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Twist on Famous Double-Slit Experiment Deals a Blow to Einstein’s Quantum Doubts

gizmodo.com Gayoung Lee 2025-12-08 17:25:03

Albert Einstein famously disliked quantum theory’s understanding that physical objects, including light, exist as both a particle and a wave, and that this duality could not be simultaneously observed. But a new, simple iteration of a foundational quantum experiment offers the most conclusive, direct evidence yet that Einstein may have been wrong. In a recent paper for Physical Review Letters, MIT scientists successfully replicated the double-slit experiment on the atomic scale, allowing for an

Topics: atoms einstein light like quantum

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Atomic "Bomb" Ring from KiX, 1947 (2020)

news.ycombinator.com Unknown 2026-01-26 14:24:18

Release date: 1947 | Where to purchase: eBay 1947 | “It’s a seething scientific sensation!” In 1947, General Mills’ KiX cereal brand offered the Atomic “Bomb” Ring as a premium in exchange for 15 cents plus a cereal box top. Also known as the Lone Ranger Atomic Bomb Ring, it was a reflection of the public’s preoccupation with the power and potential of atomic energy at the time. The ring had an adjustable gold-coloured band with lightning-blast explosions on its sides. An aluminum warhead was

Topics: 1947 atomic bomb ring spinthariscope

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Atomic "Bomb" Ring from KiX (1947)

news.ycombinator.com Unknown 2026-01-27 02:24:18

Release date: 1947 | Where to purchase: eBay 1947 | “It’s a seething scientific sensation!” In 1947, General Mills’ KiX cereal brand offered the Atomic “Bomb” Ring as a premium in exchange for 15 cents plus a cereal box top. Also known as the Lone Ranger Atomic Bomb Ring, it was a reflection of the public’s preoccupation with the power and potential of atomic energy at the time. The ring had an adjustable gold-coloured band with lightning-blast explosions on its sides. An aluminum warhead was

Topics: 1947 atomic bomb ring spinthariscope

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Shifts in diatom and dinoflagellate biomass in the North Atlantic over 6 decades

news.ycombinator.com Crispin M. Mutshinda 2026-02-17 00:36:04

Abstract The North Atlantic Ocean has large seasonal blooms rich in diatoms and dinoflagellates which can contribute disproportionately relative to other primary producers to export production and transfer of resources up the food web. Here we analyze data from the Continuous Plankton Recorder to reconstruct variation in the surface ocean diatom and dinoflagellate community biomass over 6 decades across the North Atlantic. We find: 1) diatom and dinoflagellate biomass has decreased up to 2% per

Topics: atlantic biomass diatom diatoms dinoflagellate

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RSS Server Side Reader

news.ycombinator.com Unknown 2026-02-18 00:11:52

I like the idea of RSS, but none of the RSS readers stuck with me, until I implemented one of my own, using a somewhat unusual technique. There’s at least one other person using this approach now, so let’s write this down. Let me start with a quick rundown of RSS, as the topic can be somewhat confusing. I am by no means an expert; my perspective is amateur. The purpose of RSS is to allow blog authors to inform the readers when a new post comes out. It is, first and foremost, a notification mec

Topics: atom feed list reader rss

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QuEra Quantum System Leverages Neutral Atoms to Compute

news.ycombinator.com Timothy Prickett Morgan 2026-02-20 03:58:04

Sitting in an office at QuEra Computing’s Boston headquarters, Yuval Boger was talking about the recent advancements made in quantum computing that are driving the chorus around an accelerated the timeframe the launch of a usable and reliable system. “Sometimes it’s hard to see all the amazing progress that’s been happening,” Boger, QuEra’s chief commercial officer, told The Next Platform in a recent interview. “But if you go back a few years – five or ten years ago – the question was, ‘Could p

Topics: atoms boger quantum quera systems

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Implementing Logic Programming

news.ycombinator.com Sir Whinesalot 2026-03-12 02:32:21

Most of my readers are probably familiar with procedural programming, object-oriented programming (OOP), and functional programming (FP). The majority of top programming languages on all of the language popularity charts (like TIOBE) support all three to some extent. Even if a programmer avoided one or more of those three paradigms like the plague, they’re likely at least aware of them and what they’re about. Or they’re applying one of the paradigms while denying that they’re doing so, like Has

Topics: atom fact parent predicate self

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Latest Tech News

Scientists uncover extreme life inside the Arctic ice

La-Proteina

Scientists Stunned as Tiny Algae Keep Moving Inside Arctic Ice

C++: Strongly Happens Before?

Shared_ptr<T>: the (not always) atomic reference counted smart pointer (2019)

A statistical analysis of Rotten Tomatoes

This quantum radar could image buried objects

First-Ever Look at Exploding Molecules Reveals Their Quantum Secrets

The History and Physics of the Atomic Bomb

Life After the Atomic Blast, as Told by Hiroshima’s Survivors

Chris Curry interviewed by Your Computer magazine (1981)

Double-slit experiment holds up when stripped to its quantum essentials

Twist on Famous Double-Slit Experiment Deals a Blow to Einstein’s Quantum Doubts

Atomic "Bomb" Ring from KiX, 1947 (2020)

Atomic "Bomb" Ring from KiX (1947)

Shifts in diatom and dinoflagellate biomass in the North Atlantic over 6 decades

RSS Server Side Reader

QuEra Quantum System Leverages Neutral Atoms to Compute

Implementing Logic Programming

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