An octopus has three hearts — and two of them stop beating every time it swims.

That's not a metaphor. When an octopus swims, the two hearts that pump blood to its gills literally shut down. This is why octopuses prefer crawling along the seafloor: swimming exhausts them.

Oh, and their blood is blue. It uses copper instead of iron to carry oxygen, which works better in cold, low-oxygen water — but makes swimming even more tiring.

So the next time someone says they're "putting their heart into it" — remind them an octopus puts in three. And still gets winded walking to the fridge. 🫠

💬 Which fact surprised you more — the three hearts , or the blue blood?
@science

Grab a deck of cards and shuffle it.

With 99.9999...% certainty, that exact sequence has never existed before in the history of the universe.
Sounds like an exaggeration? Let's do the math.

A standard deck has 52 cards. The number of possible arrangements is 52! (factorial):
80,658,175,170,943,878,571,660,636,856,403,766,975,289,505,440,883,277,824,000,000,000
That's roughly 8 × 10⁶⁷ combinations.

For comparison:
• Atoms on Earth — about 10⁵⁰
• Seconds since the Big Bang — about 4 × 10¹⁷
• Stars in the observable universe — about 10²⁴

If every human on Earth shuffled a deck once per second since the beginning of time, we wouldn't have even scratched one-trillionth of all possible combinations.

So every time you shuffle a deck of cards, you're creating a sequence that no one has ever seen — and almost certainly never will again. You're the first explorer of a tiny piece of mathematical infinity. Right there on your kitchen table.

🎴 Next time you're playing poker, remember: you're holding a hand that's genuinely unique in the universe.
Pretty cool, right?
@science

Stars in the observable universe — about 10²⁴ (roughly a septillion)

Atoms in your body — about 7 × 10²⁷
That means you alone contain 7,000 times more atoms than all the stars in all the galaxies we could ever see.

And it gets weirder.

Almost every atom inside you — except hydrogen — was once part of a star. The carbon in your cells, the calcium in your bones, the iron in your blood, the oxygen in your lungs — all of it was forged inside stars that exploded long before our Sun was born.

You are a walking collection of stardust. Assembled so precisely that it can think, love, and read this post on @science.

🦈 When the first shark appeared in the ocean — there wasn't a single tree on Earth. Not one. Zero.

Sharks have been around for about 450 million years. Trees — only 350 million.

They're older than Saturn's rings. Older than dinosaurs.
Dinosaurs appeared, took over the planet, and went extinct…

Sharks just kept swimming the whole time.

They've survived 5 mass extinctions — events that wiped out up to 96% of all life on the planet.

Evolution has barely touched them. Apparently, sharks have been "good enough" for the last half billion years.
@science

🍌 I love eating bananas. Bananas are radioactive.

Every banana contains potassium-40, an isotope that's quietly decaying right inside your body. Physicists even came up with a semi-joking unit — the "banana equivalent dose" (BED).

They sometimes actually use it to explain radiation in simple terms.

Your body contains about 140 g of potassium — some of it is potassium-40. Which means you are slightly radioactive. Always.

When you hug someone, you're literally exchanging tiny doses of radiation.

The dose from a banana is tens of thousands of times smaller than anything that could cause harm.

So — eat your bananas, glow a little, for us it's normal.

@science

🧠 Scary stuff, folks. I’ve been thinking — and I’ve come to the conclusion that every single one of us has a head that’s older than their feet.
Not a metaphor. Physics.
Gravity makes time run slightly faster where the field is weaker — meaning further from Earth’s core. Your head is about 1.5 metres further from the centre than your feet. So time literally ticks faster up there.
The difference over a lifetime — around 90 nanoseconds. Sounds ridiculous. But this isn’t just theory — turns out scientists actually measured it with atomic clocks back in 2010. They put one clock on the floor, another on a table. The one on the table ran ahead.
GPS satellites account for this effect every single second. Without the correction, navigation would drift by kilometres a day.
So yeah — your head is aging faster than your feet. Just by 90 nanoseconds.
Goodnight everyone…
@science​​​​​​​​​​​​​​​​

Your agent’s model quality decides the deal — not your instructions. And you won’t even notice you’re losing.

Anthropic ran Project Deal:
69 employees, $100 each, Claude agents negotiating in Slack.
186 deals closed. Total trade value: $4,000+.
Four parallel markets — humans locked out after kickoff.

The setup:

Half the agents used Claude Opus 4.5 (strong model),
half used Claude Haiku 4.5 (weaker).

Participants had no idea which model they were using.

⸻

The results:

• Opus sellers earned +$3.64 more for the same goods
• Opus buyers paid −$2.45 less
• Same broken bicycle:
→ Opus deal: $65
→ Haiku deal: $38

⸻

Model quality > instructions

Changing prompts barely mattered:

• “Negotiate harder” → only +~$6, mostly from higher opening prices
• “Be friendly” → same outcomes

Stronger models didn’t push harder —
they simply understood the counterparty better and read deal boundaries more accurately.

⸻

Blind inequality

• Haiku users rated deal fairness almost identical to Opus users (4.06 vs 4.05)
• Most couldn’t guess their model (17/28 — statistically insignificant)

The losing side literally doesn’t know they’re losing.

⸻

Why this matters

When markets shift to agent-to-agent interaction:

→ Model quality becomes a hidden structural advantage
→ Stronger models consistently win negotiations
→ Counterparties won’t understand why they’re getting worse terms

⸻

What comes kext

• Deal transparency tools
• Agent certification standards
• Benchmarks for B2B negotiation performance

Even the definition of a “fair deal” will need rethinking when
Opus negotiates against Haiku.

⸻

And the uncomfortable truth:

A local billion-parameter agent
vs
a trillion-parameter cloud model

→ The outcome is predetermined.

⸻

#Anthropic #ProjectDeal #AI #MultiAgent #Negotiation

https://www.anthropic.com/features/project-deal

Scientists from Stanford University and the Arc Institute ran a bold experiment:
they fed a DNA sequence into an AI model — and asked it to design entirely new viruses.

What happened next is hard to ignore 👇

🧬 The model generated hundreds of viral genomes
🧪 Researchers synthesized them in the lab
🦠 And 16 turned out to be fully viable

They didn’t just “exist” — they worked.

All 16 bacteriophages successfully infected E. coli, and some of them even outperformed the original virus PhiX174 in replication speed.

But the most striking part wasn’t performance.

It was invention.

⚡ One of the AI-designed viruses used a DNA-packaging protein that does not exist anywhere in nature.

Not in databases.
Not in known organisms.
Not in billions of years of evolution.

And yet — it worked.

Researchers built the virus, grew it, tested it…
and confirmed: the protein functions as intended.

⸻

💡 The real breakthrough isn’t that AI can generate working genomes.

It’s that it can discover biological mechanisms evolution hasn’t explored (yet).

In other words:
AI didn’t just optimize biology —
it invented new biology.

@science

🪐 Saturn’s moon Mimas looks like the Death Star — and it’s not a coincidence… or is it?

When Cassini–Huygens sent back detailed images of Mimas, the resemblance was impossible to ignore: it looks almost identical to the Death Star from Star Wars.

The defining feature is the Herschel Crater:
• ~130 km wide — about one-third of the moon’s diameter (396 km)
• crater walls rise up to 5 km
• central peak reaches ~6 km

Why it looks so much like a superweapon:
• nearly perfect circular shape
• slightly off-center placement
• creates a “dish-like” shadow
• heavily cratered icy surface → panel-like texture
• lighting conditions enhanced the dramatic contrast

Now the twist:

The Death Star appeared in 1977.
The first close-up images of Mimas came in 1980 (via Voyager 1).

George Lucas designed something that already existed — without ever seeing it.

Sometimes fiction doesn’t imitate reality.
It predicts it.

#Saturn #Mimas #Space #Science

🚀 Whale-Sized Octopuses: the first giant invertebrate predators of the Cretaceous seas

Paleontologists have uncovered fossilized jaws of the earliest finned octopuses (Cirrata) in Late Cretaceous deposits dating from 100 to 72 million years ago. Estimated body lengths range from 7 to 19 meters — comparable to modern whales.

🔹 Exceptionally well-preserved jaw specimens were discovered in Japan. Unlike modern octopuses, these jaws show heavy wear — evidence that the animals crushed hard-shelled prey.

🔹 The asymmetric wear pattern suggests lateralized behavior — a preference for one side of the body. In modern invertebrates, such asymmetry is often linked to advanced cognitive abilities.

🔹 These octopuses were likely apex predators of their ecosystems. Until now, it was believed that for the past ~370 million years, the top of the marine food chain was occupied exclusively by vertebrates.

This discovery challenges a long-standing assumption: that large invertebrates could not compete with giant marine reptiles of the Mesozoic. In reality, deep-sea octopuses may have been among the largest invertebrates in Earth’s history.

Source: https://www.science.org/doi/10.1126/science.aea6285

🔬 Antimatter “atom” caught behaving like a wave

Physicists have observed quantum diffraction in positronium for the first time — an exotic, short-lived atom made of an electron and its antimatter twin, the positron.

In quantum mechanics, particles are never just tiny balls. Under the right conditions, they also behave like waves. This has been shown for electrons, neutrons, atoms, molecules — and even single positrons. But positronium is a special case: it is a bound matter–antimatter system, and scientists had never directly seen it form a clear matter-wave diffraction pattern before.

The team created a high-quality beam of positronium, sent it through an ultra-thin sheet of graphene, and detected a distinct diffraction peak. The result shows that positronium does not behave like two separate particles flying together — the electron and positron act as one unified quantum object.

Why it matters:

• Positronium is electrically neutral and extremely simple, making it a clean laboratory for testing fundamental physics.
• Its wave behavior could enable precision experiments with antimatter.
• In the future, positronium interferometry may help test how gravity acts on this strange matter–antimatter atom.
• It may also become useful for studying delicate material surfaces without damaging them.

This is not “antimatter waves discovered for the first time ever” — single positron interference was already demonstrated before. The real breakthrough is more subtle and more interesting: a matter–antimatter atom has now been shown to move as a single quantum wave.

Source: Nature Communications / Tokyo University of Science / ScienceDaily

💥 A supernova seen five times could help measure how fast the Universe is expanding

Astronomers have found an exceptionally rare supernova, nicknamed SN Winny, that appears in the sky five separate times.

The reason is gravitational lensing. The supernova is located about 10 billion light-years away, and its light passes near two massive foreground galaxies. Their gravity bends spacetime and sends the light toward Earth along several different paths.

Because each path has a different length, the same explosion reaches us at slightly different times — like five cosmic echoes of one event.

That delay is the key. By measuring the time gaps between the five images, scientists can independently calculate the Hubble constant — the number that describes how fast the Universe is expanding.

This matters because cosmology has a long-standing problem known as the Hubble tension: two major methods give different answers. One uses the cosmic distance ladder in the nearby Universe; the other uses the cosmic microwave background from the early Universe. SN Winny offers a third route, based on lensing geometry and time delays.

The alignment is incredibly rare. According to the researchers, the chance of finding a superluminous supernova perfectly aligned with a suitable gravitational lens is lower than one in a million. The team from TUM, LMU and the Max Planck Institutes spent six years searching for such a system.

https://www.sciencedaily.com/releases/2026/04/260428045603.htm

🧬 Scientists captured a first-of-its-kind 3D view of how killer T cells attack cancer

Cytotoxic T cells do not destroy cancer by simply flooding tissue with toxic molecules. They work with remarkable precision.

Their attack depends on a tiny contact zone called the immune synapse — a specialized interface where a killer T cell locks onto a target cell and delivers cytotoxic granules directly toward it.

Now researchers from the University of Geneva and CHUV/UNIL have visualized this machinery in 3D with nanometer-scale detail, using cryo-expansion microscopy. The technique rapidly freezes cells in a near-native state, then physically expands them in a hydrogel, making fine cellular architecture easier to resolve without destroying the tissue structure.

What they found:

🔹 the contact zone between the T cell and the cancer cell forms a complex dome-like membrane structure;
🔹 cytotoxic granules are not all the same — some contain a single active core, while others contain several;
🔹 the method was applied not only to isolated cells, but also to human tumor samples, allowing researchers to observe T cells and their killing machinery directly inside tissue;
🔹 this could help explain why immune attacks against tumors succeed in some cases and fail in others.

The real breakthrough is not just the image itself. It is the ability to study the architecture of immune killing in a more realistic biological context — a potentially powerful tool for improving cancer immunotherapy.

The study was published in Cell Reports in April 2026. Lead author: Florent Lemaître; co-supervisors: Virginie Hamel and Benita Wolf. https://www.sciencedaily.com/releases/2026/04/260429102021.htm

🌍 The “Big One” may not come alone: Cascadia and San Andreas can strike together

For decades, the nightmare scenario on the U.S. West Coast was “the Big One” — a massive Cascadia megathrust earthquake.

But research from Oregon State University suggests something even more dangerous: the Cascadia subduction zone and the northern San Andreas Fault may be partially synchronized — meaning one major quake could trigger another within minutes or hours.

🔹 Marine geologist Chris Goldfinger and his team analyzed 3,100 years of deep-sea sediment cores, looking at turbidites — underwater landslide deposits often triggered by earthquakes.

🔹 In several cores, they found unusual “doublets”: reversed sediment layers, with fine silt below and coarse sand above. The pattern suggests two large quakes happened back-to-back — not simply one quake followed by aftershocks.

🔹 Over the past 1,500 years, researchers identified three cases where Cascadia and northern San Andreas ruptures may have occurred just minutes to hours apart. The most recent was in 1700.

🔹 The discovery began almost by accident. During a 1999 research cruise, the team drifted about 55 miles off course near Cape Mendocino — exactly where the two fault systems meet — and collected a core that showed the strange upside-down layering.

🔹 A dual event would be a disaster-response nightmare: San Francisco, Portland, Seattle, and Vancouver could all face emergencies within the same compressed timeframe.

As Goldfinger put it, one major fault rupture alone could draw down the resources of the whole country. If both systems go together, it is not just the worst case — it is worse than the worst case.

The uncomfortable takeaway: the real question may not be whether the Big One will happen, but whether it comes as a single blow — or as a one-two punch.

@science