David M. Ewalt
@dme.bsky.social
Editor in Chief, Scientific American. Author of 'Of Dice and Men' & 'Defying Reality.' I drop science like Galileo dropped the orange. https://www.davidmewalt.com/
Reposted by David M. Ewalt
Science says eat more pie: 🧪 www.scientificamerican.com/article/whic...
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
www.scientificamerican.com
November 25, 2025 at 3:01 PM
Science says eat more pie: 🧪 www.scientificamerican.com/article/whic...
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!
November 21, 2025 at 1:48 AM
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!
Reposted by David M. Ewalt
This is bananas.
I Sent Hundreds of Thousands of E-mails to the Future. Here’s the Story
Twenty years ago Forbes.com sent hundreds of thousands of messages to the future. Here’s what happened next
www.scientificamerican.com
November 17, 2025 at 5:12 PM
This is bananas.
Reposted by David M. Ewalt
Designing nuclear-waste repositories is part engineering, part anthropology—and part mythmaking
The Mind-Bending Challenge of Warning Future Humans about Nuclear Waste
Designing nuclear-waste repositories is part engineering, part anthropology—and part mythmaking
scientificamerican.com
November 17, 2025 at 3:48 PM
Designing nuclear-waste repositories is part engineering, part anthropology—and part mythmaking
Reposted by David M. Ewalt
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...
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...
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
November 14, 2025 at 10:29 PM
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...
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...
Reposted by David M. Ewalt
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.
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
www.scientificamerican.com
November 14, 2025 at 5:15 PM
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.
Reposted by David M. Ewalt
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-...
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-...
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
www.scientificamerican.com
November 14, 2025 at 6:51 PM
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-...
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-...
Reposted by David M. Ewalt
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
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
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
www.scientificamerican.com
November 14, 2025 at 2:27 PM
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
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
Reposted by David M. Ewalt
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...
After delays, Jeff Bezos’ rocket company successfully launched a NASA mission to study Mars on Thursday.
www.scientificamerican.com/article/blue...
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.
www.scientificamerican.com
November 14, 2025 at 12:32 AM
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...
After delays, Jeff Bezos’ rocket company successfully launched a NASA mission to study Mars on Thursday.
www.scientificamerican.com/article/blue...
Reposted by David M. Ewalt
Early findings indicate that Epstein-Barr Virus may also cause the autoimmune disease lupus
The Virus That Causes Mono May Also Cause Lupus
Early findings indicate that Epstein-Barr Virus may also cause the autoimmune disease lupus
www.scientificamerican.com
November 12, 2025 at 7:20 PM
Early findings indicate that Epstein-Barr Virus may also cause the autoimmune disease lupus
Reposted by David M. Ewalt
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...
www.scientificamerican.com/article/alar...
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
www.scientificamerican.com
November 6, 2025 at 1:29 PM
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...
www.scientificamerican.com/article/alar...
The view from the @sciam.bsky.social offices is pretty spectacular at this time of year.
November 5, 2025 at 11:50 PM
The view from the @sciam.bsky.social offices is pretty spectacular at this time of year.
Reposted by David M. Ewalt
Now on @sciam.bsky.social: Astronomers are agog over this all-day gamma-ray burst.
A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at all.
By @whereisyvette.bsky.social.
www.scientificamerican.com/article/long...
A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at all.
By @whereisyvette.bsky.social.
www.scientificamerican.com/article/long...
These Cosmic Outbursts Normally Last for Minutes. This One Went on for Hours—And Nobody Knows Why
A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at all
www.scientificamerican.com
November 5, 2025 at 9:02 PM
Now on @sciam.bsky.social: Astronomers are agog over this all-day gamma-ray burst.
A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at all.
By @whereisyvette.bsky.social.
www.scientificamerican.com/article/long...
A cosmic explosion known as GRB 250702B is by far the longest gamma-ray burst astronomers have ever seen—if it’s even one at all.
By @whereisyvette.bsky.social.
www.scientificamerican.com/article/long...
Reposted by David M. Ewalt
Are we the only rational thinkers? New research on our primate cousins suggests otherwise
Chimps Can Rethink Their Beliefs—Just Like Humans
Are we the only rational thinkers? New research on our primate cousins suggests otherwise
www.scientificamerican.com
October 30, 2025 at 6:44 PM
Are we the only rational thinkers? New research on our primate cousins suggests otherwise
What would the world look like if we changed the value of pi? Doomguy can tell you. www.scientificamerican.com/article/how-...
How an Error in Cult Classic Game Doom Sparked New Appreciation for Pi
What would the world look like if we changed the value of pi? Whether in the real world or a game environment, the answer is complex
www.scientificamerican.com
October 30, 2025 at 12:09 PM
What would the world look like if we changed the value of pi? Doomguy can tell you. www.scientificamerican.com/article/how-...
Reposted by David M. Ewalt
Hurricane Melissa and the knotty problem of hurricane categories: 🧪 www.scientificamerican.com/article/does...
Is It Time to Classify Hurricanes as Category 6?
Hurricane Melissa’s powerful winds and drenching rains devastated Jamaica. But is its wrath a sign that we need a new designation for monster storms?
www.scientificamerican.com
October 29, 2025 at 8:09 PM
Hurricane Melissa and the knotty problem of hurricane categories: 🧪 www.scientificamerican.com/article/does...
One of the cool things about my job: Where else is the most-read story of the day going to be about noperthedrons? www.scientificamerican.com/article/math...
This New Shape Breaks an ‘Unbreakable’ 3D Geometry Rule
The noperthedron has a surprising property—which disproves a long-standing conjecture
www.scientificamerican.com
October 28, 2025 at 9:14 PM
One of the cool things about my job: Where else is the most-read story of the day going to be about noperthedrons? www.scientificamerican.com/article/math...
Reposted by David M. Ewalt
Now on @sciam.bsky.social: Did astronomers photograph UFOs orbiting Earth in the 1950s, years before human activity there? New peer-reviewed studies suggest the answer is “yes,” but skeptics say these conclusions are premature. By @astrojonny.bsky.social.
www.scientificamerican.com/article/did-...
www.scientificamerican.com/article/did-...
Some Scientists See UFOs in Old Telescope Data. Others See a Teachable Moment
New peer-reviewed research reporting strange lights in the pre-space-age sky is sparking curiosity and controversy
www.scientificamerican.com
October 28, 2025 at 1:20 PM
Now on @sciam.bsky.social: Did astronomers photograph UFOs orbiting Earth in the 1950s, years before human activity there? New peer-reviewed studies suggest the answer is “yes,” but skeptics say these conclusions are premature. By @astrojonny.bsky.social.
www.scientificamerican.com/article/did-...
www.scientificamerican.com/article/did-...
Reposted by David M. Ewalt
How can reconstructing long-lost smells of ancient artifacts help us connect with the past?
History Smelled. Here’s How We’re Sniffing It Out
How can reconstructing long-lost smells of ancient artifacts help us connect with the past?
www.scientificamerican.com
October 27, 2025 at 2:21 PM
How can reconstructing long-lost smells of ancient artifacts help us connect with the past?
Reposted by David M. Ewalt
This is only the second time we’ve had more than two Category 5 storms in a single Atlantic hurricane season
Hurricane Melissa Is the Third Category 5 Storm This Year—That’s Only Happened Once Before
This is only the second time we’ve had more than two Category 5 storms in a single Atlantic hurricane season
www.scientificamerican.com
October 27, 2025 at 3:56 PM
This is only the second time we’ve had more than two Category 5 storms in a single Atlantic hurricane season
As cat 5 hurricane Melissa bears down on Jamaica, it is poised to be the worst storm to ever hit the Caribbean island, surpassing Hurricane Gilbert in 1988, which killed 49 people, destroyed 100,000 homes and did $700 million in damage
www.scientificamerican.com/article/why-...
www.scientificamerican.com/article/why-...
Why Hurricane Melissa Could Be the Worst Storm to Ever Hit Jamaica
Category 5 Hurricane Melissa’s exceptional strength and slow pace could make it more destructive than Hurricane Gilbert, which hit Jamaica in 1988
www.scientificamerican.com
October 27, 2025 at 8:34 PM
As cat 5 hurricane Melissa bears down on Jamaica, it is poised to be the worst storm to ever hit the Caribbean island, surpassing Hurricane Gilbert in 1988, which killed 49 people, destroyed 100,000 homes and did $700 million in damage
www.scientificamerican.com/article/why-...
www.scientificamerican.com/article/why-...
It says "Don't forget to drink your Ovaltine."
After decades of speculation, two writers uncovered the answer to the Kryptos code’s final cipher
After 35 Years, a Solution to the CIA’s Kryptos Puzzle Has Been Found
After decades of speculation, two writers uncovered the answer to the Kryptos code’s final cipher
www.scientificamerican.com
October 18, 2025 at 12:40 AM
It says "Don't forget to drink your Ovaltine."
Reposted by David M. Ewalt
A comet visible to the naked eye will make its closest approach to Earth on October 21
Look Up for a Rare Comet and Meteor Show
A comet visible to the naked eye will make its closest approach to Earth on October 21
www.scientificamerican.com
October 17, 2025 at 2:11 PM
A comet visible to the naked eye will make its closest approach to Earth on October 21
Reposted by David M. Ewalt
In certain circumstances, losses create a sure path to victory, an idea with implications for biology and cancer therapy
Two Wrong Strategies Do Make a Right in This Math Paradox
In certain circumstances, losses create a sure path to victory, an idea with implications for biology and cancer therapy
www.scientificamerican.com
October 16, 2025 at 1:15 PM
In certain circumstances, losses create a sure path to victory, an idea with implications for biology and cancer therapy
Reposted by David M. Ewalt
Get a sneak peek at some of @sciam.bsky.social favorite books of the year on November 20th 7:30pm ET at @greenlightpod.bsky.social 📚
🆓 🎟️ www.eventbrite.com/e/the-scient...
🆓 🎟️ www.eventbrite.com/e/the-scient...
The Scientific American 2025 Nonfiction Panel
Scientific American partners with Greenlight to highlight some of the year's best nonfiction!
www.eventbrite.com
October 15, 2025 at 8:28 PM
Get a sneak peek at some of @sciam.bsky.social favorite books of the year on November 20th 7:30pm ET at @greenlightpod.bsky.social 📚
🆓 🎟️ www.eventbrite.com/e/the-scient...
🆓 🎟️ www.eventbrite.com/e/the-scient...