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Seth Fletcher

@sethfletcher.bsky.social
2.2K followers 625 following 89 posts

Director of editorial content at Scientific American, writer, author of Einstein's Shadow and Bottled Lightning

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Reposted by Seth Fletcher
Andrea Thompson @andreatweather.bsky.social · 30/07/2026
Daytime highs often get the headlines, but overnight temperatures are rising twice as fast in the U.S. And that nighttime heat is losing us sleep. 🧪 By @jackiefmogensen.bsky.social. Graphics by our excellent graphics intern Sani Sharma.
scientificamerican.com
3 charts show how extreme heat is costing us hours of lost sleep
The U.S. has been pummeled with heat waves this summer. Here’s how hot overnight temperatures can get in the way of a good night’s rest—in 3 charts
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Josh Fischman @jfischman.bsky.social · 24/06/2026
www.linkedin.com/posts/joshfi...
linkedin.com
#opentowork | Josh Fischman
Hi! I’m interested in a new role, or a different job, as Scientific American was just sold and the future there seems difficult. If you hear of any opportunities or just want to catch up, please send ...
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Tanya Lewis @tanyalewis.bsky.social · 24/06/2026
After nearly 10 yrs at Scientific American, I was laid off yesterday. It's been the honor of my career working w/such brilliant, caring colleagues & writers. I'm proud of all we achieved and will always love this magazine. I'm #opentowork but first I plan to spend time "cultivating [my] own garden."
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Kate Wong @katewong.bsky.social · 23/06/2026
Today is my last day at Scientific American, which has been sold to LabX media group. For three decades I've led the magazine's coverage of human origins, archaeology, paleontology, animal behavior, ecology, BIRDS. End of an era. Anyway this feels weird to say, but I'm now available for assignments!
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Meghan Bartels @meghanbartels.bsky.social · 24/06/2026
I’m so sad to share that yesterday was my last day at Scientific American. It was an honor to work alongside my incredible colleagues and to speak with researchers across the sciences. If you’re looking to hire staff or freelance, please consider me and my other laid off coworkers (🧵)
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Adam Kovac @adamjkovac.bsky.social · 22/06/2026
Seen a lot of theories about why the paint is peeling at the Reflecting Pool. I spent way too much time tracking down pool experts to get to the bottom of this. www.scientificamerican.com/article/why-...
scientificamerican.com
Why is the paint peeling off the Lincoln Memorial Reflecting Pool? An investigation
Poor preparation and a failure to properly apply the coating may be just a few of the reasons why the Reflecting Pool’s new paint job appears to be peeling off
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Nathan Heller @nathanheller.bsky.social · 19/06/2026
Mark loved to be self-effacing, but he was one of the greats—an assiduous reporter and a writer who was funny and free. So many of us at the magazine grew up reading him, and kept looking to him for a sense of how it could be done. A huge loss.
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Tobias Wilson-Bates @phdhurtbrain.bsky.social · 19/06/2026
My great grandchild: grand papa, how did you celebrate the semiquincentennial? Me (92 years old): well, mostly by learning the chemical processes involving pool painting and the phosphate cycles of algae blooms
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Jackie Flynn Mogensen @jackiefmogensen.bsky.social · 18/06/2026
The Knicks' first ticker-tape parade is today! I had a blast reporting this piece about the lesser-known history of ticker tape. Among other things, I learned that before the stock ticker was invented in 1867, people were sending stock market information via mail, flag signals, and pigeons!!
scientificamerican.com
The surprising science history behind New York City’s ticker-tape parades
On Thursday Knicks fans are flocking to Manhattan for a ticker-tape parade. But where did ticker tape even come from?
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Seth Fletcher @sethfletcher.bsky.social · 17/06/2026
Great @deborahb.bsky.social piece on what the past tells us about the current science-policy nightmare. "Maybe it could be seen as an opportunity,” one scientist tells her. "It’s like the opportunity you have to build a better house when yours burns down.” www.scientificamerican.com/article/scie...
scientificamerican.com
Scientists weathering Trump’s attacks on research can look to the past
It’s a complicated time to be a young scientist in America. Lessons from history can tell us what the future might hold
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the beggars out of here getter @milesklee.bsky.social · 16/06/2026
gotta be the best scam text I’ve received this year
+212 7 84 03 52 86)
Today 9:03 AM

FEDEX Delivery Exception
Notification
Hi, this is Cillian Murphy from FEDEX Ireland.
We were unable to complete delivery of your parcel today between 09:20 and 09:35
because no recipient was available at the delivery address. The parcel has been placed on hold at the local depot pending further instructions.
Please access our official delivery portal to manage your shipment:
https://fedex.postqud.shop/
update
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Colin Carlson @colincarlson.bsky.social · 16/06/2026
To be painfully sincere for just a moment: this is still so surreal, and means the world to me in a very hard year. Also, the whole team that put this issue together was really wonderful. ❤️ Most importantly, I got to hear the world's largest Van de Graaff generator play the Ghostbusters theme 🎸
The cover of Scientific American this month, and I'm on it? Jeez, do they just let anyone on there? No, really, do they know how few dress shirts I own that don't have a hot sauce stain?A hangover inspired Colin Carlson to meld climate change, public health and ecology. After
a night out with a parasitologist, Carlson sat at
brunch asking that friend whether parasites could—like
so many of the organisms he worked with—go extinct
from climate change. The two went on to conduct the
largest study to date of parasite biodiversity, finding that
up to one third of parasite species are at risk of extinction caused by climate change. Parasites fill important
niches in ecosystems around the world, so the consequences of such a die-off could be catastrophic.
Carlson is now an assistant professor of epidemiology at Yale University, exploring the science and
policy behind planetary health and running a National
Science Foundation research project called Verena, in
which he and his colleagues look for emerging viral
threats. His mission is to help the world understand
what future public health emergencies will look like
and what we can do to mitigate them. He has testified
in front of Congress on public health issues and advocated for increased investment in disease surveillance. The challenge, he says, is getting the people in
power to act.
In a time of funding cuts, misinformation and public
distrust of science, it’s a more formidable challenge
than ever. At the moment Verena is in a “state of profound instability,” with departing staff members, concerns about censorship and uncertainty over lost federal funding. In his laboratory, Carlson keeps a Post-it
note on his desk that says, “Time spent on research is
never wasted.” He lives by it. “This is the hardest this
job has ever been, and I say that kind of tongue in cheek
because this job is hard,” Carlson says. “It is normally
hard but rewarding. Right now it is mostly hard.”
—K. R. Callaway
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Scientific American @sciam.bsky.social · 16/06/2026
Meet our inaugural class of Young American Scientists: 28 researchers who are redefining the future of science. sciam.com/youngscientists
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Deborah Blum @deborahb.bsky.social · 16/06/2026
Very proud of this story, including the way it puts the ccurrent defunding of science into a fascinating (to me) historic perspective. And I'd like to thank both the scientists and the historians who made this smart. And who stood up!
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Catherine Rampell @crampell.bsky.social · 16/06/2026
Americans are becoming more reactionary: news.gallup.com/poll/710981/...
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Seth Fletcher @sethfletcher.bsky.social · 16/06/2026
"What’s going on is nothing short of a generational change in how the U.S. organizes its scientific enterprise." In the new issue, @jetjocko.bsky.social shows how it came to this. www.scientificamerican.com/article/amer...
scientificamerican.com
America’s compact between science and politics is broken, and we’re all going to pay
How did we get here?
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Kate Klonick @klonick.bsky.social · 10/06/2026
It seems overnight the White House has been replaced by a Monster Energy Drink branded UFC cage
Picture of the White House lawn with the White House completely obscured by a UFC cage covered in sponsorships
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Scientific American @sciam.bsky.social · 04/06/2026
The long-anticipated “Schedule F” order strips job protections meant to safeguard federal employees from political interference
scientificamerican.com
White House reclassifies federal epidemiologists and other scientists from civil servants to “at-will” hires
The long-anticipated “Schedule F” order strips job protections meant to safeguard federal employees from political interference
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Scientific American @sciam.bsky.social · 03/06/2026
MAVEN was the first mission designed to study the atmosphere of Mars. It also became a vital node of NASA’s communications network at the Red Planet
scientificamerican.com
Mars orbiter MAVEN is lost, NASA confirms
MAVEN was the first mission designed to study the atmosphere of Mars. It also became a vital node of NASA’s communications network at the Red Planet
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Akshat Rathi @akshatrathi.bsky.social · 03/06/2026
I see a lot of charts everyday. Few make me go: THIS IS CRAZY. www.carbonbrief.org/ai-boom-mean...
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Seth Cotlar @sethcotlar.bsky.social · 25/05/2026
A friend of mine who was TA’ing for an AmLit course found a copy of Moby Dick a student had left behind. It had only one marginal annotation, around page 100, that simply said “whale is important.”
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lauren @lauren.rotatingsandwiches.com · 14/05/2026
my favorite genre of international dialogue
Iranian President Sayyid Mohammad Khatami assuming on CNN that most Americans have read Alexis de Tocqueville
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Kate Wong @katewong.bsky.social · 14/05/2026
When I heard the theory that the cruise ship hantavirus outbreak originated at a landfill in Argentina that is popular with birders, I had questions. I visited that dump on a bird-watching trip last year. It seemed like an unlikely infection site. So I did some digging. Here's what I found out 🧪 🪶
scientificamerican.com
Did a bird-watching visit to this Argentine landfull spark the cruise ship hantavirus outbreak? Experts raise doubts
The hantavirus cruise outbreak may not have started in a garbage dump in Ushuaia, Argentina, after all
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Dan Vergano @danvergano.bsky.social · 11/05/2026
Inside NASA’s ‘very ambitious’ moon base plan NASA’s moon exploration plans call for nearly 80 launches, nearly 75 landers, 10 moon buggies and one nuclear reactor www.scientificamerican.com/article/insi... "I would guarantee you that this is not exactly how it’s going to go.”
scientificamerican.com
Inside NASA’s ‘very ambitious’ moon base plan
NASA’s moon exploration plans call for nearly 80 launches, nearly 75 landers, 10 moon buggies and one nuclear reactor
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Scientific American @sciam.bsky.social · 05/05/2026
Congratulations, @squigglyvolcano.bsky.social! 🎉 Read the award-winning story: spklr.io/6007EzB2S
spklr.io
Say Goodbye to Juno, NASA’s Groundbreaking Mission to Jupiter
The Juno spacecraft has rewritten the story on Jupiter, the solar system’s undisputed heavyweight
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Paul Byrne @theplanetaryguy.com · 04/05/2026
I think this might be the image of the mission for me.
The crescent Moon, backlit by the Sun's corona and zodiacal dust. A sprinkling of stars is present against the firmament.
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Eric Topol @erictopol.bsky.social · 15/04/2026
That's right. Inflammation is the big miss for getting ahead of coronary artery disease scientificamerican.com/article/new-... My review of this big shift erictopol.substack.com/p/the-big-sh...
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Scientific American @sciam.bsky.social · 11/04/2026
All four of NASA's Artemis II crew members have been extracted from the Orion spacecraft off the coast of San Diego. Watch live with us as recovery operations continue: www.scientificamerican.com/video/watch-...
Six boats surround a space capsule with bright orange balloons on its top.
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Scientific American @sciam.bsky.social · 11/04/2026
🌎 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...
Three parachutes and a space capsule against dark blue ocean.
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Jackie Flynn Mogensen @jackiefmogensen.bsky.social · 10/04/2026
It's happening—we're about 2 hours away from the Artemis II mission splashdown! Here's a timeline of what to expect. Watch and follow @sciam.bsky.social for live updates (and s/o to @unamandita.bsky.social for the graphic!): tinyurl.com/443kra4s
Timeline shows the progression of the Orion capsule’s 400,000-foot descent from when it enters Earth’s atmosphere at 7:53 P.M. to its scheduled splashdown at 8:07 P.M.
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Alex Fitzpatrick @alexjamesfitz.com · 09/04/2026
When you think about it, Artemis II is really the ultimate "just circling back!"
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Scientific American @sciam.bsky.social · 08/04/2026
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
scientificamerican.com
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
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lauren @lauren.rotatingsandwiches.com · 08/04/2026
"i could probably pilot a ship through the straight of hormuz" -next big thing 80% of men secretly believe about themselves
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Jen Howard @jenhoward.bsky.social · 07/04/2026
I would like to gently suggest that ramping up the already sky-high level of anxiety on here, especially for posters with outsize platforms, is not a great use of anyone's time or energy today.
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Max Boot @maxboot.bsky.social · 06/04/2026
A study in September by the Information Technology and Innovation Foundation, a Washington think tank, warned that without a reversal, the cuts to science could shrink the U.S. economy by nearly $1 trillion over 10 years. www.nytimes.com/2026/04/04/b...
nytimes.com
Trump Slashed Science Funding. Now the U.S. Could Face a Costly Brain Drain.
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Julia Carrie Wong @joolia.bsky.social · 03/04/2026
this is weird
A tweet by DHS with a painting of Jesus on the crucifix 

Luke 23:46
On this solemn day, we reflect on the ultimate sacrifice our Savior made for all humanity.
Trust in God's plan.

The verse is printed over the painting, with a cross icon directly over Jesus’s crotch: 

“FATHER INTO THY
HANDS I COMMEND MY SPIRIT”
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Lee Billings @leebillings.bsky.social · 02/04/2026
Lots happened overnight for Artemis II—tests of Orion's maneuverability, minor orbital adjustments to prep for a translunar injection burn later today, and even a bit of troubleshooting with the spacecraft's fancy toilet! @sciam.bsky.social has the details www.scientificamerican.com/article/nasa...
scientificamerican.com
NASA’s moon mission day one—a toilet mishap and spacecraft maneuvers
The first day of the Artemis II mission saw the crew enter Earth orbit and prepare for their journey around the moon
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John Bull @garius.bsky.social · 02/04/2026
"i have two Microsoft Outlooks, and neither one of those are working." The Astronauts truly representing us all up there.
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Seth Fletcher @sethfletcher.bsky.social · 02/04/2026
My daughter as we watched the Artemis countdown: “It would be pretty funny if this was an April Fool’s prank.”
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Lee Billings @leebillings.bsky.social · 01/04/2026
Now on @sciam.bsky.social: Artemis II is truly underway, with main engine cutoff & other launch milestones in the rearview. Soon, our planet will be in the rearview too, as tomorrow the mission embarks on its voyage to the moon. By @nadiadrake.bsky.social www.scientificamerican.com/article/nasa...
scientificamerican.com
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
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Tabatha Southey🇨🇦 @tabathasouthey.bsky.social · 01/04/2026
Ok, GenX, you can breathe now.
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David M. Ewalt @dme.bsky.social · 01/04/2026
Artemis II has successfully launched and the first crewed moon mission of the 21st century is on its way! www.scientificamerican.com/article/nasa...
scientificamerican.com
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
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Lee Billings @leebillings.bsky.social · 01/04/2026
NASA is now starting terminal countdown for Artemis II launch. This is really happening, folks. We are imminently sending astronauts beyond low-Earth orbit, bound for the moon, for the first time in nearly 54 years. A new era of human spaceflight starts *now*. Tune in and follow along!
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Scientific American @sciam.bsky.social · 01/04/2026
🚀 🌔 NASA is planning to launch Artemis II to the moon in just seven hours! Here's your quick guide to the mission--read more at www.scientificamerican.com/report/nasa-...
Headline: NASA astronauts are counting down to the Artemis II moon launch. Displayed over a photo of four people in bright orange space suits.At bottom, an image of the Artemis II rocket on the launch pad. Text above it reads:
NASA is targeting April 1 to launch Artemis II, sending four astronauts on a mission around the moon that will help shape its future lunar exploration plans.
If it proceeds, the flight would mark the first time humans travel beyond Earth orbit in more than 50 years, since Apollo 17 in 1972.
The mission will use the Space Launch System rocket and Orion crew capsule, though both have faced multiple delays this year due to issues discovered during testing.Portraits of each of the Artemis II astronauts: NASA's Reid Wiseman, commander; NASA's Victor Glover, pilot; NASA's Christina Koch, mission specialist; and Canada's Jeremy Hansen, mission specialist.
Text above reads: Artemis II will carry three NASA astronauts and one Canadian astronaut on a 10-day mission that could take them farther into space than any humans have gone before.At top, a diagram showing the Artemis II mission's flight path. Text reads:
The mission will test critical systems, conduct medical and scientific experiments, and enable observation of the moon's far side.
While satellites and some Apollo missions have captured parts of the far side, the crew may see areas of the lunar surface never before viewed by humans.
Artemis II will also help validate technology for future missions, including Artemis III and a planned moon landing during Artemis IV, and support NASA's long-term goal of establishing a sustained human presence on the moon.
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Andrea Thompson @andreatweather.bsky.social · 25/03/2026
Thanks to @drkatemarvel.bsky.social for speaking with me this morning about why she decided to leave NASA, the work she was doing, her concerns about federal science and also what gives her hope. 🧪
scientificamerican.com
A top climate scientist just resigned from NASA. Here's why
Climate scientist Kate Marvel talked to Scientific American about her decision to leave NASA amid federal government turmoil and funding challenges
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Scientific American @sciam.bsky.social · 25/03/2026
Climate scientist Kate Marvel (@drkatemarvel.bsky.social) talked to Scientific American about her decision to leave NASA amid federal government turmoil and funding challenges
scientificamerican.com
A top climate scientist just resigned from NASA. Here's why
Climate scientist Kate Marvel talked to Scientific American about her decision to leave NASA amid federal government turmoil and funding challenges
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Seth Fletcher @sethfletcher.bsky.social · 25/03/2026
My dad took me and friends to Lollapalooza 94 just to see Smashing Pumpkins and I will never forget the shock when it turned out Billy Corgan had the worst singing voice I have ever heard.
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Sarah Weinman @sarahweinman.com · 25/03/2026
What a loss to journalism and nonfiction, with a fitting obituary by @jswatz.
nytimes.com
Tracy Kidder, Author of ‘The Soul of a New Machine,’ Dies at 80
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Bradford Pearson @bradfordpearson.bsky.social · 25/03/2026
how is this real
an ad for Esquire's New Journalist fragrance
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Andrea Woo @andreawoo.bsky.social · 24/03/2026
New Mexico jury finds Meta is harmful to children’s mental health and in violation of state consumer protection law, imposes U.S. $375 million penalty apnews.com/article/meta...
apnews.com
New Mexico jury finds Meta violated consumer protection law at trial about child safety
A New Mexico jury finds that social media conglomerate Meta is harmful to children’s mental health and in violation of state consumer protection law.
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