Live updates: The 130th Boston Marathon Athletes are flooding the Hopkinton town common this morning as they prepare to tackle whatever New England's fickle spring weather throws at them

The wheelchair winners are in: Eden Rainbow-Cooper, from Great Britain, for the women, and Marcel Hug, from Switzerland, for the men. Latest updates from the Boston Marathon here:

Atlassian Enables Default Data Collection to Train AI Atlassian will begin collecting customer metadata and in-app content from **Jira**, **Confluence**, and other cloud products by default on **August 17, 2026**, to train its AI offerings including `Rovo` and `Rovo Dev`. The change affects roughly **300,000** customers; metadata collection is mandatory for Free, Standard, and Premium tiers and cannot be opted out on those plans. Enterprise customers can opt out of metadata and in-app collection by default. Collected data will be retained up to **seven years**, with in-app data removed within 30 days after deletion or opt-out and models retrained within 90 days. Customers using customer-managed keys, Atlassian Government Cloud, Isolated Cloud, or with HIPAA requirements are excluded from collection.

Atlassian will begin collecting customer metadata and in-app content from Jira, Confluence, and other cloud products by default on August 17, 2026, to train its AI offerings including Rovo and Rovo Dev. Metadata collection is mandatory for Free, Standard, & Premium tiers and cannot be opted out

Es kann sein, dass wir dieser Tatsache unser Leben verdanken: Im Inneren der Galaxie gibt es mehr schwere Elemente - wie jene, aus denen wir bestehen. Im äußeren Bereich, wo wir jetzt sind, geht's aber ruhiger zu, es gibt weniger Supernovae in der Umgebung.
Originalpublikation:

From #ScienceUnderSiege
(bookshop.org/p/books/scie...)

Radio Free Skaro #1064 – Not Simply To Amuse Download MP3 Are you tired of old men ranting about the current state of both Doctor Who and Star Trek? Well, brace yourself for more as Screen Rant of all places has a well-thought out piece about the future of both franchises and we may have cogitated more than is strictly necessary about the topic! Plus we look into a new set of action dollies from Character Options, Big Finish reveals, Tubi bringing back on-demand Doctor Who (in the US) and we’re Making It Political as we interview writer Lizbeth Myles about her new book, Where We Stand, Where We Fall - The Politics of Doctor Who!

Radio Free Skaro #1064 - Not Simply To Amuse

- The current existential crisis of Doctor Who (and Star Trek)
- New action dollies!
- Lizbeth Myles on her new book Where We Stand, Where We Fall!

A Clash of Two Titans: Why GW231123 pushes the limits of scientists’ models Another day, another interesting LIGO-Virgo-KAGRA detection! Find out why the extreme parameters of GW231123 create problems for gravitational wave modelers and may have some new information about bla...

From @kelsie137.bsky.social: Another day, another interesting LIGO-Virgo-KAGRA detection! Find out why the extreme parameters of GW231123 create problems for gravitational wave modelers and may have new information about black hole formation! ⚛️ 🔭 ☄️ 🧪
astrobites.org/2026/04/18/a-clash-of-two-titans/

Free will, consciousness and AI: a conversation with Daniel Dennett - ABC listen Daniel Dennett is one of the world's leading philosophers and cognitive scientists - at 81, and with a new memoir published, he's still as provocative and inspiring as ever.

We lost Daniel Dennett, one of the great thinkers in philosophy of mind, two years ago. In 2023, I conducted a career-spanning interview with him, covering many of his (and my) favourite subjects, from the puzzle of free will to the question of machine consciousness:
www.abc.net.au/listen/progr...

Wien hat mit 1.800 Trinkbrunnen mehr als ganz Deutschland.

Astronomie in der Klimakrise YouTube video by Haus der Astronomie

Die Klimakrise ist eine der größten Herausforderungen unserer Zeit. Zusammen mit Andrea Gokus schauen wir uns morgen um 19 Uhr bei Astro & Co live genauer an, welche Rolle die Astronomie dabei spielt - sei es durch negative Folgen oder als Verursacher 🔭
www.youtube.com/watch?v=rg0-...

Please don't use speaker phone while in library. Ask for headphones at the front desk.

Only a fallen society needs this sign

Two hooded figures with lamps approach a moonlit, isolated cottage. A woman answers the door. We have come for the child, says the hooded figure So soon? she asks It is time, says the hooded figure. The woman is distraught. We should never have got him a library card! What is done cannot be undone, says the hooded figure We couldn’t see the harm! We just wanted him to enjoy reading! For most, it ends there, says the hooded figure, turning away and walking into the wilderness Oh lord, What have I done! says the woman, the child walks past her and out into the darkness with them. Do not cry mother. I am a writer now.

my latest books cartoon for @theguardian.com

#OnThisDay 1930: the BBC's news announcer said, "there is no news" and piano music was played for the remainder of the 15 minute segment.

More days like this please

A black and white photo of Einstein’s desk, blackboard, and bookshelves after he passed away. Journals, magazine, and papers are strewn over the desk and shelves. A few of the shelves are organized, but mostly they contain haphazard, listing stacks that seem like they could fall over at any moment. The desk is a beautiful disaster, with papers and journals covering every inch. A pot for tobacco, a small glass jar, and Einstein’s pipe sit near the middle. The dark leather chair is pushed back slightly from the desk. The blackboard is sectioned off into several different regions, each of which contains one or more boxed formulas from whatever Einstein was working on when he fell ill.

Albert Einstein passed away #OTD in 1955 due to complications from a ruptured abdominal aneurysm.

Doctors recommended surgical intervention but Einstein declined, saying “I have done my share; it is time to go. I will do it elegantly."

Here is his office as he left it. 🧪 ⚛️

Image: R. Morse/LIFE

Against a dark background, the Sun’s disc is shown in dark orange, as captured by NASA’s Solar Dynamics Observatory. A thin halo of yellow light surrounds the Sun, giving it a luminous outline against the dark background of space. This yellow outline shows the Sun’s inner corona, as captured by Proba-3. Also in yellow, two solar prominence eruptions are visible, resembling bright yellow wave-like outburst extending outwards from the Sun -- a large one in the top left and a much smaller one in the bottom right.

#PPOD: The Sun’s inner corona, the hottest part of our star's atmosphere, appears faint yellow in this image taken by the ASPIICS coronagraph aboard Proba-3. The image combines data from Proba-3’s ASPIICS coronagraph (inner solar corona in yellow)... 🧪 🔭

„Sag’s multi 2026“-Siegerin Oleksandra Bratko, die vor vier Jahren aus der Ukraine nach Kärnten kam und ihre fabelhafte Rede auf Deutsch und Italienisch gehalten hat:

Coronavirus: Christian Drosten gewinnt erneuten Prozess gegen Physiker Wiesendanger Ein Gericht hat Roland Wiesendanger verboten, Christian Drosten in Bezug auf den Ursprung des Coronavirus der Lüge zu bezichtigen. Drosten bekam vollumfänglich recht.

Es wird ja immer von einer Aufarbeitung der Coronazeit gesprochen, die notwendig sei.
Tatsächlich kommt sie langsam voran.
www.zeit.de/gesundheit/2...

The application has remained stable since approximately 9 PM PDT, April 16 despite ongoing Distributed Denial-of-Service (DDoS) attacks.
We have not seen any evidence of unauthorized access to private user data.
We will provide our next update on or before the morning of April 20.

Michelle Wu: Hope alone can't get you through a marathon — or to a more perfect union I remember the first time I watched the Boston Marathon, writes Mayor Michelle Wu. I'd moved to Boston for college and I'd never seen anything like it: an entire region turning out to cheer for people...

ESSAY: "I remember the first time I watched the Boston Marathon," writes Mayor Michelle Wu for @cogwbur.bsky.social. "I'd moved to Boston for college and I'd never seen anything like it: an entire region turning out to cheer for people they had never met."

*Schrödinger

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Tracing the s-Process: Spectroscopic Insights into Chemical Abundances in O- and C-rich Evolved Stars. Sophie Van Eck et. al. https://arxiv.org/abs/2604.09205

BNS and low-mass NSBH rates, in units of $ {Gpc

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Implications of low neutron star merger rates for gamma-ray bursts, r-process production and Galactic double neutron stars. Maya Fishbach et. al. https://arxiv.org/abs/2604.05059

Two-panel plot showing elemental abundances versus atomic number (Z) for the star LAMOST J122216.85−063345.2. Top panel: The y-axis shows log-number abundances, and the x-axis spans atomic numbers 38–92. Red circles with error bars represent measured abundances for elements such as Sr, Y, Zr, Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Hf, Os, Ir, Pb, Th, and U. Two comparison curves are overplotted: a gold line for a scaled solar s-process pattern and a teal line for a scaled solar r-process pattern. The observed points generally follow the r-process curve more closely than the s-process curve, especially for heavy neutron-capture elements. Some elements are labeled with small numerical values above/below, indicating relative contributions or scaling factors. Bottom panel: Residuals (difference between observations and model) plotted against atomic number. Vertical bars in gold (s-process) and teal (r-process) show deviations, with the r-process residuals generally closer to zero than the s-process, indicating a better fit. A horizontal line at zero marks perfect agreement.

The NSF @noirlabastro.bsky.social GHOST instrument at Gemini South delivers high-resolution spectra. Astronomers have used it to reveal an actinide-boost, metal-poor halo star with strong r-process signatures, opening new windows on Galactic archaeology. arxiv.org/pdf/2603.29246 #astronomy

Evolution: Auch der moderne Mensch unterliegt natürlicher Selektion In den vergangenen Jahrtausenden hat die natürliche Selektion Hunderte menschliche Genvarianten beeinflusst – besonders nach Einführung der Landwirtschaft.

Natürlich unterliegt der Mensch noch natürlicher Selektion. Das war auch vorher schon bekannt. bemerkenswert ist, wie viele Genabschnitte die da jetzt identifiziert haben wollen. Bisher kannte man etwa zwei Dutzend, hier sind es fast 500.
Was also steckt dahinter?
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(Artikel hinter Paywall)

Can you explain the strong nuclear force without colors? "Color" with respect to the strong force is just an analogy. Here's how to understand it without colors, group theory, or any advanced math.

Can you explain the strong nuclear force without colors?

The idea of a "color charge" confuses a lot of people, and the analogy certainly has its flaws.

Here's how to understand the strong force without colors, and without group theory, too.
bigthink.com/starts-with-...
#physics #proton #quark

Getting real tired of "AI will revolutionize your workflow!" I am a scientist! I do what I do because I want to dig into things myself. I don't want offload that labor onto a computer, and I don't need to accelerate the rate at which I work, because the point of the work is to learn.

Die Tod&Pudel-Tasse gibt‘s hier: www.joscha.com/tassen

👍🏻

Darstellung vieler Blutgefäße im ganzen Nagetierhirn als Illustration der Verrohrung- Quelle: Di Giovanna, A. P., et al. . "Whole-Brain Vasculature Reconstruction at the Single Capillary Level." Sci Rep 8, no. 1 (Aug 22 2018): 12573.

Zurück zur Infrastruktur im Gehirn: Es ist halt schon beeindruckend, dass quasi jedes einzelne Neuron sein eigenes kapillares Blutgefäß hat! Da kommen dann mal 600km Verrohrung im Kopf zusammen. Bild: Lichtschnitt-Mikroskopischer Blick auf eine Rattenhirn und seine Gefässe.

If current cuts to the Federal Science Budget proposed by the White House are approved by Congress, that will far-and-away be the largest cut to science since the United States began funding it.

Republicans & Democrats alike know there’s no surer path to Making America Not-Great.

Ankündigung des Vortrags "Sterne erzählen: Was Gaia über die Geschichte der Milchstraße verrät" von Michael Biermann am 16. April 2026 um 19:00 Uhr im Auditorium des Hauses der Astronomie, Königstuhl 17, 69117 Heidelberg. Eintritt 6 Euro. Im Hintergrund eine Panoramaaufnahme des Bands der Milchstraße im sichtbaren Licht mit einer Darstellung des Gaia-Satelliten

Unser Abendvortrag in der Reihe Faszination Astronomie über die Ergebnisse der Gaia-Mission mit Michael Biermann morgen um 19:00 Uhr ist zwar schon ausverkauft, aber vielleicht könnt ihr vor Ort an der Abendkasse noch Restkarten ergattern? (Achtung, nur Barzahlung möglich) 🔭