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Posts by David M. Ewalt

Text reads "Escape the Headlines. Explore the Universe." Displayed above images of a Scientific American magazine and the publication's app and website, accompanied by a sticker reading "$1 for 90 Days--Subscribe Today"

Text reads "Escape the Headlines. Explore the Universe." Displayed above images of a Scientific American magazine and the publication's app and website, accompanied by a sticker reading "$1 for 90 Days--Subscribe Today"

Hey Bluesky! 👋🦋 We’ve been reading your replies about our paywall, and we’re listening. We want to share why it’s there—and an easy, low-cost way to read more.

TL;DR: You can unlock every Scientific American article for 90 days for just $1 spklr.io/6003EyRIR

More context below 🧵 1/6

5 hours ago 84 30 2 20
Three parachutes and a space capsule against dark blue ocean.

Three parachutes and a space capsule against dark blue ocean.

🌎 NASA's Artemis II mission has splashed down and all four astronauts are reported safe, bringing an end to a stunning flight around the moon. www.scientificamerican.com/article/nasa...

1 week ago 614 104 8 9
What is the quantum ‘Ghost Murmur’ purportedly used in Iran? Scientists question CIA’s claim of long-range heartbeat detection Ghost Murmur was described as a futuristic CIA tool that could detect a heartbeat from vast distances. Physicists say the public story clashes with the basic limits of magnetic sensing

Reports this week claimed the CIA used a tool called Ghost Murmur—allegedly powered by “long‑range quantum magnetometry”—to detect a downed Air Force officer’s heartbeat in the mountains of Iran. It's a great story, but there's one problem: The tech is almost certainly impossible.

1 week ago 5 2 0 0
"Earthset" behind the lunar surface

"Earthset" behind the lunar surface

Earthrise, 2026

Earthrise, 2026

“There’s the Earth comin’ up,” Anders said at the time. “Wow, is that pretty!”

Anders later compared the sight of the Earth to “a fragile Christmas tree ornament.”

“I thought to myself, it's too bad we don't treat it more like a Christmas tree ornament,” Anders said in a 2023 NASA interview. “It's really too bad, we're shooting missiles and rockets and whatnot at each other on this tiny little place we call home,” Anders added. “It's the only home in the universe for us humans. And it's too bad we don't treat it a little better.”

“There’s the Earth comin’ up,” Anders said at the time. “Wow, is that pretty!” Anders later compared the sight of the Earth to “a fragile Christmas tree ornament.” “I thought to myself, it's too bad we don't treat it more like a Christmas tree ornament,” Anders said in a 2023 NASA interview. “It's really too bad, we're shooting missiles and rockets and whatnot at each other on this tiny little place we call home,” Anders added. “It's the only home in the universe for us humans. And it's too bad we don't treat it a little better.”

Astronaut Bill Anders took the iconic 1968 photo "Earthrise."

“It's really too bad, we're shooting missiles and rockets and whatnot at each other…" Anders later said. "It's the only home in the universe for us humans."

Artemis II just recreated the photo: www.scientificamerican.com/article/in-a...

2 weeks ago 63 18 1 2
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Watch live—NASA’s Artemis II’s moon flyby is underway Today the four astronauts of Artemis II are observing the far side of the moon, setting distance records and experiencing a solar eclipse

The Artemis II Orion spacecraft is at the peak of its trip around the moon—the first time humans have passed nearby in more than 50 years. As they make the flyby, the four astronauts will travel farther in space than any human before them.
www.scientificamerican.com/article/nasa...

2 weeks ago 1 0 0 0
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NASA’s Artemis II launches on first crewed moon mission of the 21st century A daring 10-day voyage will take four astronauts on a loop around the moon and set the stage for future forays to the lunar surface

Artemis II has successfully launched and the first crewed moon mission of the 21st century is on its way! www.scientificamerican.com/article/nasa...

2 weeks ago 8 6 0 1

HERE WE GO!

2 weeks ago 0 0 0 0
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What are the best foods for a hangover, scientifically? There’s no bulletproof remedy for a hangover, but a nutrition scientist explains which foods could aid symptoms after one has had too much to drink

I know some of you need this today. www.scientificamerican.com/article/what...

1 month ago 7 2 1 0

Firmly in cheek! I'm glad you caught that :)

1 month ago 1 1 0 0
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These strange galaxies without dark matter break all the rules Bizarre objects that seem to lack all dark matter present a cosmic mystery

The new issue of @sciam.bsky.social describes a cosmic conundrum that's keeping astronomers up at night: We assume galaxies are held together by dark matter because without it all the stars would simply fly apart. So what's keeping together galaxies that have no dark matter at all?

1 month ago 34 7 2 1
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Mathematicians find one pi formula to rule them all A mixture of AI and algorithms uncovered a hidden structure spanning 2,000 years of equations for pi

A mixture of AI and algorithms uncovered a hidden structure spanning 2,000 years of equations for pi

1 month ago 34 9 1 0
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Is this where China’s astronauts will land on the moon? An obscure lunar region called Rimae Bode is emerging as a high-priority landing site for China’s first crewed moon mission

Now on @sciam.bsky.social: China has yet to officially select a lunar landing site for its first moonwalking astronauts, but a new study makes the case for targeting Rimae Bode, a near-equatorial region on the moon's near side.

www.scientificamerican.com/article/chin...

1 month ago 11 2 1 2
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The Hubble Space Telescope is old, but it’s far from busted The venerable Hubble observatory is going strong despite its decades in space and the advent of next-generation successors

The venerable Hubble observatory is going strong despite its decades in space and the advent of next-generation successors

2 months ago 54 8 2 1
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The Schrödinger equation is getting a glow-up for its 100th birthday A century ago, Erwin Schrödinger came up with an equation that says how the quantum world behaves. Now scientists are asking what happens when the observer is part of that world

Now on @sciam.bsky.social: The Schrödinger equation just turned 100, but that doesn’t mean quantum physicists have solved all its mysteries. Chief among them: What, exactly, does it mean to incorporate observers into the gnarly math? By Joseph Howlett.

www.scientificamerican.com/article/the-...

2 months ago 18 6 0 0
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In Florida, the temperatures are plummeting. Iguanas might do so, too Florida’s iguanas are an introduced species, and they aren’t used to the chilly temperatures the state is currently experiencing

“These tropical lizards were experiencing conditions that they’ve never experienced in their entire evolutionary history before, tens of millions of years”

3 months ago 826 228 44 22
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Watch Scientific American's Favorite Science Videos of 2025 On TikTok and other short-form video platforms, Scientific American explored the underground labs of Greenland, brand-new colors and the perfect way to make eggs

www.scientificamerican.com/article/our-...

3 months ago 4 1 0 0
A person standing outside a door with a sign that says "under construction"

A person standing outside a door with a sign that says "under construction"

Look how excited I am to get a sneak peek of the Public Science Common at @museumofscience.bsky.social! It's super secret inside so no pictures, but this is going to be an incredible space for live events and science education. I can't wait for collaborations with @sciam.bsky.socia... stay tuned!

4 months ago 17 2 0 1
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Which Thanksgiving Pie Gives You the Biggest Sugar Rush? Scientific American asked experts which type of Thanksgiving pie spikes blood sugar the most—and how to eat healthier while still enjoying the holidays

Science says eat more pie: 🧪 www.scientificamerican.com/article/whic...

4 months ago 36 12 2 1
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The @sciam.bsky.social 2025 Nonfiction Panel at @greenlightbklyn.bsky.social was a smashing success! Thanks to authors Marguerite Holloway, Maris Kreizman, Nathan Lent, and Kate Marvel, and our host Brianne Kane!

5 months ago 9 0 0 0

I don't have the numbers yet for the 20 year send. But at the 10 year mark the bounce rate was low, something like 6-7%. I expect the larger issue is mail going into abandoned mailboxes, other than the address or server being dead entirely

5 months ago 2 0 0 0
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The Mind-Bending Challenge of Warning Future Humans about Nuclear Waste Designing nuclear-waste repositories is part engineering, part anthropology—and part mythmaking

Designing nuclear-waste repositories is part engineering, part anthropology—and part mythmaking

5 months ago 18 5 3 1
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U.S. Spy Agency Releases Amelia Earhart Records The U.S. Office of the Director of National Intelligence released long-promised records related to vanished pioneering aviator Amelia Earhart. More records are promised on a rolling basis

U.S. Spy Agency Releases Amelia Earhart Records

The U.S. Office of the Director of National Intelligence released long-promised records related to vanished pioneering aviator Amelia Earhart. More records are promised on a rolling basis

www.scientificamerican.com/article/amel...

5 months ago 3 2 1 0
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Innovations In: Type 1 Diabetes This special report explores the global burden of type 1 diabetes, along with incredible innovations that are leading to better treatments and care and a potential cure

This special report explores the global burden of type 1 diabetes—and the incredible innovations driving better treatments, better care, and the possibility of a cure.

5 months ago 18 5 0 0
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Man With Tick-Borne Meat Allergy Dies after Eating Burger Lone star tick bites are the most common cause of alpha-gal syndrome, which causes severe allergic reactions to red meat

True nightmare fuel: Scientists just confirmed the first known death from a severe meat allergy caused by a tick bite.

The man, who died in 2024 after eating a burger, had alpha-gal syndrome, a bizarre disease triggered by tick bites.

www.scientificamerican.com/article/man-...

5 months ago 36 27 3 2
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City Raccoons Are Evolving to Look More Like Pets City-dwelling raccoons seem to be evolving a shorter snout—a telltale feature of our pets and other domesticated animals

I, for one, welcome our new trash panda overlords.

But for real, fascinating science on how we might be seeing the very early stages of domestication in action in wild animals. 🧪

By @marinacoladas.bsky.social for @sciam.bsky.social

5 months ago 272 59 14 6
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Blue Origin's NASA Launch to Mars Is a Shot across the Bow for Elon Musk's SpaceX After delays, Jeff Bezos’ rocket company successfully launched a NASA mission to study Mars on Thursday.

Blue Origin’s NASA Launch to Mars Is a Shot across the Bow for SpaceX

After delays, Jeff Bezos’ rocket company successfully launched a NASA mission to study Mars on Thursday.

www.scientificamerican.com/article/blue...

5 months ago 1 1 0 0
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The Virus That Causes Mono May Also Cause Lupus Early findings indicate that Epstein-Barr Virus may also cause the autoimmune disease lupus

Early findings indicate that Epstein-Barr Virus may also cause the autoimmune disease lupus

5 months ago 74 25 4 3
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Giant Mirrors, Orbital Data Centers and Space-Based Advertisements Could Soon Clutter the Night Sky Reflect Orbital’s plan to deliver “sunlight on demand” using thousands of giant orbital mirrors is just the latest in a growing list of disruptive commercial activities in space

Now on @sciam.bsky.social: Reflect Orbital’s plan to deliver “sunlight on demand” using thousands of giant orbital mirrors is just the latest in a growing list of disruptive commercial activities in space. By @raminskibba.bsky.social. 🧪🔭

www.scientificamerican.com/article/alar...

5 months ago 16 5 1 1
A view of New York Harbor at sunset viewed from lower Manhattan

A view of New York Harbor at sunset viewed from lower Manhattan

The view from the @sciam.bsky.social offices is pretty spectacular at this time of year.

5 months ago 7 0 0 0