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Margaret Harris

@drmlharris.bsky.social
3.4K followers 2K following 1.1K posts

Award-winning science journalist at Physics World magazine @physicsworld.bsky.social. Also available as @DrMLHarris@mastodon.social. All views on science, politics, history, nonsense, etc. my own.

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Margaret Harris @drmlharris.bsky.social · 29/09/2026
Sometimes I get to write a story that combines my ❤️of history with my ❤️ of physics, but stories that also incorporate my ❤️ of trains are as rare as leaves on the line in February. So here goes: did space weather delay the 10.05pm from Exeter on 18 October 1841? 🧪⚛️ physicsworld.com/a/did-space-...
physicsworld.com
Did space weather delay a train in 1841? – Physics World
It would have been the earliest example of space weather impacting human technology, but an international team of researchers found a slight problem
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Retraction Watch @retractionwatch.com · 24/09/2026
"If medical schools and universities don't want the literature to be overwhelmed with garbage," Oransky said, "then they should probably stop giving every applicant ... an incentive to publish a lot of crap."
medpagetoday.com
Is AI Flooding Medical Journals With 'Meaningless' Research?
'It's not fraudulent, and it's not really slop,' one expert says
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Richard Morris @ahistoryinart.bsky.social · 24/09/2026
Do you have a painting or drawing by Lawrence Bragg? The Nobel Prize-winning scientist appears in the 1927 Solvay photo alongside Einstein and Marie Curie; he was also a keen painter. I’m planning an exhibition about his life and times in 2027, the centenary of this picture.
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Margaret Harris @drmlharris.bsky.social · 25/09/2026
What if kids getting sick all the time in winter isn’t *only* because their immune systems are still developing? What if it’s *also* because their schoolrooms have terrible air quality?
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Margaret Harris @drmlharris.bsky.social · 24/09/2026
I’m at the Akademie for yngre forskere (the Young Academy of Norway) in Oslo tonight, attending an evening of talks on the timely subject of trust in AI. Highlights to follow… ⚛️🧪
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Heidelberg Laureate Forum @hlforum.bsky.social · 24/09/2026
❔ AI can be extremely useful, but can we make it safe for us humans? 🤖 Last week, at the Spark Session at #HLF26, Torsten Hoefler and Jacob Tsimerman approached that possibility from opposite directions. Read the full story by Andrei Mihai on the HLFF Blog. 👉 scilogs.spektrum.de/hlf/can-we-t...
scilogs.spektrum.de
Can We Turn AI Into Scientists? And Most Importantly, Can We Make Them Safe? - Heidelberg Laureate Forum - SciLogs - Wissenschaftsblogs
These are two of the most pressing questions in science at the moment.
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Margaret Harris @drmlharris.bsky.social · 24/09/2026
See also: academic conference talks.
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Margaret Harris @drmlharris.bsky.social · 22/09/2026
One of the great things about being a physics journalist is that you get to hear about *everybody's* ridiculous technical challenges while being like, "Wow, yeah, that sounds really hard, good luck with that one, mate."
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Margaret Harris @drmlharris.bsky.social · 22/09/2026
"I wonder to what extent these smart people are drawn to AI precisely because of its grandiosity; because fixing the boring problems of society like healthcare or inequality is beneath people as smart as them." Very interesting post from @mjrobbins.com: martinrobbins.substack.com/p/the-ai-apo...
martinrobbins.substack.com
The AI Apocalypse is Extremely Boring Now
Elites are obsessed with the end of the world. Most people have bigger problems.
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Margaret Harris @drmlharris.bsky.social · 21/09/2026
Grim concept, gorgeous execution: my review of a new coffee-table book of photographs related to the first atomic weapons test. 🧪⚛️ physicsworld.com/a/illuminati...
physicsworld.com
Illuminating, beautiful and disturbing: a photographic record of the Trinity atomic test – Physics World
Margaret Harris reviews Trinity: an Illustrated History of the World’s First Atomic Test
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Margaret Harris @drmlharris.bsky.social · 03/09/2026
I had so much fun talking with @alainaglevine.bsky.social and @janelleshane.com for this podcast on careers in STEM, the role of AI in job hunting, and how the weird things that AIs do have (and haven't) changed over the past few years. Go have a listen! physicsworld.com/a/unicorn-ca... 🧪⚛️
physicsworld.com
‘Unicorn careers’ in STEM and the weirdness of AI – Physics World
Career consultant Alaina G Levine and AI researcher Janelle Shane are our podcast guests
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Margaret Harris @drmlharris.bsky.social · 02/09/2026
Ski Sunday was the highlight of many a dark and dreary UK February evening for me – and I don’t even ski! Very sad to see it go.
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Ifan Hughes @ifanghughes.bsky.social · 01/09/2026
Hot off the press! Quantified absorption of laser light by silver atoms in a hollow-cathode lamp arxiv.org/abs/2608.27700 First foray into silver spectroscopy, with two undergraduate final year project students as authors. Atoms, lasers, and lamps! 🧪 #physics ⚛️ #optics 💡
Four different experimental spectra obtained for a range of lamp currents. Each spectrum is fit with a theoretical model, showing excellent agreement. There is also a normalised residuals plot to quantify the fit.A figure where part (a) shows the fluorescence spectrum emitted from the hollow cathode lamp. Part (b) is  a schematic of the apparatus and laser system.
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Emma Monk @monkemma.bsky.social · 22/08/2026
One of the first "outrageous" claims I saw as Jason Arday's media hounding unfolded was that he ran 30 marathons in 35 days! Wow! What a thing to claim! And the newspapers all suggested there was no evidence he actually did it. Well, they clearly didn't look very hard 🙄 🧵 1/26
Photo after Jason's final marathon taken from his archived blog showing Jason surrounded by supporters in orange charity t-shirts
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Margaret Harris @drmlharris.bsky.social · 23/08/2026
Sad to hear that Nancy Landon Kassebaum has died. Not because of her death per see – 94 is an excellent age – but because there is no-one left in today’s Republican Party to carry on the liberal Republican tradition she embodied, either in Kansas or anywhere else. www.theguardian.com/us-news/2026...
theguardian.com
Nancy Kassebaum Baker, former US senator from Kansas, dies aged 94
Kassebaum Baker became the first woman elected to the US Senate without following a spouse into office
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Elise Cutts @elisecutts.bsky.social · 21/08/2026
Amazing feature on LLM persuasion by @kakape.bsky.social in @science.org
science.org
AI chatbots are becoming experts at changing people's minds. What's their secret?
ChatGPT and other AIs use a flood of facts, and the occasional lie, to persuade humans
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Margaret Harris @drmlharris.bsky.social · 21/08/2026
Come pick my brain (and the brains of actual scientists) about ways to improve your science writing! This @absw.bsky.social event is two weeks from today and it's going to be brilliant.
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Dan Garisto @dangaristo.bsky.social · 20/08/2026
Scoop: For nearly a year, NSF has struggled to make new grants. Now we know that it will not catch up. In fact, NSF will award just 6,100 new grants—a 30% y/o/y decline, itself down from a previous avg. of 11,000+. In fact, the last time NSF awarded so few grants was in the early '80s.
nature.com
Exclusive: NSF set to issue lowest number of new grants in four decades
The US science-funding agency is withholding $1 billion of its budget so that the money can go to a special White House project.
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Margaret Harris @drmlharris.bsky.social · 20/08/2026
This will only work with mature students, people taking night classes, etc, but a student I work with once asked me "Does your job align with your values?" and it's a question that's lived in my head rent-free ever since.
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Margaret Harris @drmlharris.bsky.social · 19/08/2026
This article on a new way of modelling the preparation of quantum magic states is a great semi-technical introduction to this important aspect of fault-tolerant quantum computing. Story by Yousra Farhani, a PhD student contributor to @physicsworld.bsky.social. ⚛️ 🧪 physicsworld.com/a/shortcut-f...
physicsworld.com
Shortcut for simulating logical magic states could accelerate the design of fault-tolerant quantum computers – Physics World
New classical simulation technique makes it practical to benchmark large-scale logical magic-state preparation protocols under realistic noise conditions
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Andrew MacKellar @hansoliton.bsky.social · 18/08/2026
I have ADHD. I'm also a physicist. I got the ADHD diagnosis about a year and a half ago, after really struggling with work for a few years. I didn't know about it when I was in school, or when I started a physics undergrad as a mature student, or through my PhD. I have thoughts:
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Margaret Harris @drmlharris.bsky.social · 19/08/2026
10/10, no notes for @bleddb.bsky.social here.
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Margaret Harris @drmlharris.bsky.social · 17/08/2026
Parts of Japan moved eastwards by up to 5 mm shortly after the 2011 Tohoku earthquake, and our @absw.bsky.social Media Fellow, Preetish Kakoty, wrote this fascinating piece about it. It's his first story for us, go check it out! 🧪⚛️ physicsworld.com/a/seismic-wa...
physicsworld.com
Seismic waves reflected from Earth’s core moved parts of Japan 5 mm east – Physics World
Shift followed the 2011 Tohoku-Oki earthquake and represents a new type of seismic hazard
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Sam Freedman @samfr.bsky.social · 16/08/2026
The right's attempts to turn empathy into a negative have to be fought hard.
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Dan Garisto @dangaristo.bsky.social · 14/08/2026
PSA: While many journals like Nature have policies that "strongly discourage" authors from reaching out to the press ahead of publication, that does not prohibit a response when a reporter reaches out about a preprint (which may be under submission to the journal). www.nature.com/nature-portf...
Communication with the media
We strongly discourage authors and potential authors from direct solicitation of media coverage of material they have submitted to Nature and the Nature Portfolio journals. Accepted contributions can be discussed with the media only once the publication date has been confirmed and no more than a week before the publication date under our embargo conditions. Please refer to the "Communications between scientists" section for more information about our embargo policy as it pertains to conference presentations and preprints.Communication between scientists
Nature Portfolio journals do not wish to hinder communication among researchers. We support open communications between researchers whether on a recognised community preprint server or preprint commenting platforms, through discussions at research meetings or online collaborative sites such as wikis or the author's blog. Neither conference presentations nor posting on recognized preprint servers constitute prior publication. More information about our policies on preprints can be found here.

Researchers may respond to requests from the media in response to a preprint or conference presentation, by providing explanation or clarification of the work, or information about its context. In these circumstances, media coverage will not hinder editorial handling of the submission. Researchers should be aware however that such coverage may reduce or pre-empt coverage by other media at the time of publication. We also advise that researchers approached by reporters in response to a preprint make it clear that the paper has not yet undergone peer review, that the findings are provisional and that the conclusions may change. Authors are expected to keep the details of the peer review and editorial process confidential.
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Margaret Harris @drmlharris.bsky.social · 14/08/2026
Introduce yourself as what almost killed you. Hi, I’m a weird bacterial throat infection that used to be most common in two-year-old boys yet most likely also played a role in killing the 67-year-old George Washington.
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Hilary Beaumont @hilarybeaumont.bsky.social · 13/08/2026
NEW: The most dangerous diagnosis in a heat wave People with schizophrenia face a perfect storm of dangers on a hotter planet. www.wired.com/story/heat-w...
wired.com
In a Heat Wave, One Medical Condition Is So Much Deadlier Than Any Other
People with schizophrenia face a perfect storm of dangers on a hotter planet.
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The Australian Institute of Physics @aip.org.au · 13/08/2026
📸 Can you capture physics in a single frame? The AIP Beauty of Physics Photo Competition is open Australia-wide to photographers, scientists and students. 🏆 Prizes for Grand, University & School winners 📅 Closes 30 Sept Enter: aip.org.au/event-6751326
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Celeste Labedz @celestelabedz.bsky.social · 12/08/2026
Someone good at art should make a cartoon of a colander experiencing the joy of finally going outside with their family to do their most special job that they've been looking forward to over a lifetime of simply straining pasta.
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Margaret Harris @drmlharris.bsky.social · 12/08/2026
Definitely happening! 🌞🌒 #eclipse2026
Photo of a hand holding a colander that is projecting eclipses onto a concrete wall
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Jon Moses @jon-moses.bsky.social · 12/08/2026
This motorcyclist is described as being "incredibly unlucky" after he died when a pheasant flew into him. In fact, it seems relatively common. There's were two other (non-fatal) cases reported just this year and have been many more in recent years.
shropshirestar.com
Motorcyclist, 47, hit road sign and died after pheasant flew up at him, inquest hears
Witness described “explosion of feathers” after “massive” bird flew into path of tragic rider
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Andrew Curry @andrewcurry.com · 11/08/2026
The man's skeletal injuries looked like a train hit him, but he died in 1304 CE. At #ppa26Berlin last week, @uniofbradford.bsky.social scientist Jo Buckberry concluded he was likely whacked by a flying boulder, making him the first confirmed trebuchet death in the archaeological record. @science.org
science.org
Shattered skeleton in Scottish castle is first confirmed death from trebuchet
“Devastation” across body of 14th century warrior indicates horrific demise from flying boulder
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Margaret Harris @drmlharris.bsky.social · 11/08/2026
Have said this before and will say it again: if you use AI to write something for publication, and the AI spits out words that are recognizably similar to someone else’s, you run the risk of being sued for copyright violation. Being credibly accused of plagiarism is a further, related risk.
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Margaret Harris @drmlharris.bsky.social · 10/08/2026
Ooh, even more interesting! I stand corrected.
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Margaret Harris @drmlharris.bsky.social · 10/08/2026
Interesting work, but it's not the first time someone's used sunlight to generate entangled photons. A group at China's Xiamen University did it back in April. Will be interesting to see if this August paper (from a group in Europe & the US) gets more traction. 💡🧪⚛️ physicsworld.com/a/sunlight-c...
physicsworld.com
Sunlight can produce correlated pairs of photons – Physics World
Novel source for quantum optics experiments could enable experiments in space or other locations with limited electricity
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Margaret Harris @drmlharris.bsky.social · 10/08/2026
Wish they’d done this when I passed through it during the late June heatwave. The RER train from Gare de Lyon to Gare du Nord was scarily hot and definitely not safe for longer journeys by less robust people.
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Henry Farrell @himself.bsky.social · 08/08/2026
Dan Wang and I have written the Weekend Essay at @financialtimes.com and if I can say so myself it's a banger as.ft.com/r/c1054499-a...
An illustration from classic Golden Age era science fiction.
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Nicole Rust @nicolecrust.bsky.social · 07/08/2026
US scientists: Going into fall 26, how are you thinking about things? Following Fall 24 events and a tumultuous spring 25, I remember a convo with a colleague in which we agreed we just needed to wait things out until fall 25 and we'd have some clarity about the landscape (eg for funding). /1
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Margaret Harris @drmlharris.bsky.social · 07/08/2026
Yesterday was the 81st anniversary of the atomic bombing of Hiroshima. I hope we're still learning social, moral, ethical and political lessons from it. But as this grim yet fascinating story makes clear, we are definitely still learning from it scientifically. 🧪⚛️ physicsworld.com/a/new-materi...
physicsworld.com
New material was created in Hiroshima nuclear explosion – Physics World
Rapid cooling locked in unusual crystal structure in silicon-rich metal alloy
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Margaret Harris @drmlharris.bsky.social · 07/08/2026
From a physicist who used AI to solve a nagging maths problem: “We desperately need to figure out how to filter & review this influx [of AI slop research]. We also need to design novel pedagogical frameworks to responsibly integrate tools like Claude into courses." 🧪 physicsworld.com/a/ai-model-h...
physicsworld.com
AI model helps physics Nobel laureate out of a decade-old mathematical jam – Physics World
Artificial intelligence is radically changing how researchers in some disciplines work
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Lizzie Dearden @lizziedearden.bsky.social · 06/08/2026
Me 🤝 King Charles III Apparently not white Britons
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Kevin J. Kircher @kevinjkircher.com · 05/08/2026
Climate pals, what are your favorite examples of actions that simultaneously reduce climate pollution and help us adapt to climate changes that we can no longer avoid? Joint Adaptation and Mitigation (JAM), if you will.
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John Bull @garius.bsky.social · 04/08/2026
Given we are approaching that time of the year, my big piece from years back on the 1983 Cold War Crisis (and the role of Stanislav Petrov in it) over onto authory as a free-to-read. Over the years, the myth of what happened has been simplified. The reality was scarier. Because: Ronald Reagan.
authory.com
The Day the World Didn’t End
At the height of the Cold War, with alarms screaming, one Soviet officer stopped to think. It cost him his career. It may also have saved the world. The morning of the 26th September 1983 had started ...
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Margaret Harris @drmlharris.bsky.social · 04/08/2026
My friend’s kid told me about something that happened to an adult she knows and it’s too funny not to share, so here goes. The story begins when this lady (let’s call her Liz) agrees to dog-sit for a friend who’s going on holiday. The dog is very elderly. You can guess the next part. 🧵
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Rocky Flats Chimney Sweep 🇺🇸 @midlifesuezcrisis.bsky.social · 03/08/2026
One like one random DOE/NNSA story 🤷‍♂️⚛️
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Margaret Harris @drmlharris.bsky.social · 29/07/2026
Isn't this basically *spoiler alert* the ending of the film "Sneakers"?
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Margaret Harris @drmlharris.bsky.social · 29/07/2026
Great thread about how healthcare professionals need to switch to treating the body a person has, not the one they’re assumed to have based on where they fall under a male/female heuristic.
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Margaret Harris @drmlharris.bsky.social · 28/07/2026
I love the fact that when scientists needed to make radium stable and transportable for this experiment, they chose to "caramelize" it in a solution of xylitol, a sweetener commonly used in chewing gum. They do not recommend eating (or even chewing) the results. 🧪⚛️ physicsworld.com/a/cold-radio...
physicsworld.com
Cold radioactive molecules offer a tabletop route to new physics – Physics World
Nuclear symmetry violations could show up in molecules containing pear-shaped radium nuclei
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Margaret Harris @drmlharris.bsky.social · 27/07/2026
What's the most viscous substance on Earth that isn't, for all practical purposes, completely solid? Honey 🍯❌ Pitch🛢️❌ Glass 🥛❌ Well, hmm, what about... Glaciers? 🏔️❌ Tectonic plates?? 🌍✅ physicsworld.com/a/geophysici...
physicsworld.com
Geophysicist identifies a maximum practical viscosity – Physics World
Boundary between materials that flow and those that don’t could shed light on Earth’s early history
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Alex Wild @alexwild.bsky.social · 23/07/2026
This is a blunt assessment of what the Trump regime is proposing for US science: they plan to take all the funding, essentially collapsing university-based research, in order to give that money to themselves, and they are lying about it.
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