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Stephen Young

@atomicwonk

Advocate for more sensible nuclear weapons policies, firm believer that we should not live in a world where hundreds of millions could be dead in an hour. Associate Director for Government Affairs, Global Security Program, Union of Concerned Scientists

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Latest posts by Stephen Young @atomicwonk

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The Ultimate Trump Card I take no pleasure in writing this, and you should take none in reading it

Think itโ€™s bad now? It could get much worse. open.substack.com/pub/thinking...

06.03.2026 18:27 ๐Ÿ‘ 34 ๐Ÿ” 15 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 3
A social media graphic shows four people standing on a hill overlooking a densely built city partially covered in smoke or haze. Below the photo, on a black background, a large quote reads: โ€œThis illegal war will not bring safety or security to the American people or its allies. Congress must exercise its responsibilities to rein in President Trump and his administration.โ€ Beneath the quote is a small headshot of Tara Drozdenko, identified as Director of the Global Security Program, along with the Union of Concerned Scientists logo and a 2026 copyright notice.

A social media graphic shows four people standing on a hill overlooking a densely built city partially covered in smoke or haze. Below the photo, on a black background, a large quote reads: โ€œThis illegal war will not bring safety or security to the American people or its allies. Congress must exercise its responsibilities to rein in President Trump and his administration.โ€ Beneath the quote is a small headshot of Tara Drozdenko, identified as Director of the Global Security Program, along with the Union of Concerned Scientists logo and a 2026 copyright notice.

President Trumpโ€™s illegal war of aggression against Iran, in cooperation with Israel, actively undermines global security, raises the long-term danger of nuclear proliferation, and risks dragging the US into another dangerous and protracted conflict.

Read UCSโ€™s statement: act.ucsusa.org/3N9e4ZE

02.03.2026 21:54 ๐Ÿ‘ 40 ๐Ÿ” 19 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 2
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Healthcare Professionals, Scientists and Children Sue the EPA for Backtracking on Greenhouse Gas Regulation - Inside Climate News Widely anticipated legal challenges question the agencyโ€™s reversal of the 2009 endangerment finding. The decision is โ€œreckless, illogical and ignores the vast majority of public comments,โ€ plaintiffs ...

Dr. Carlos Javier Martinez of @ucs.org states: โ€œScientifically, this decision by the Environmental Protection Agency is reckless, illogical and ignores the vast majority of public comments.โ€

19.02.2026 14:35 ๐Ÿ‘ 22 ๐Ÿ” 9 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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๐Ÿšจ Attache ta tuque!

@scientistsorg.bsky.social is hosting our 2nd Open Source Nuclear Analysis Bootcamp in partnership with @stanleycenter.org in Montrรฉal on June 21-26!

Come hang out and learn:
โ€ข Geolocation
โ€ข Missiles
โ€ข FOIA
โ€ข Imagery analysis
โ€ข Poutine ๐ŸŸ
โ€ข Bagels ๐Ÿฅฏ

C'est le fun! ๐Ÿ‘‡

23.02.2026 17:16 ๐Ÿ‘ 9 ๐Ÿ” 9 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 1
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More of this, please. The folks in this grassroots group are heroes.

Haven Watch lives by the promise, โ€œNo One Walks Alone.โ€ Day or night, they show up. When people are released from ICE detention, volunteers meet them in the cold, disoriented, and exhausted.

Beautiful and devastating all at once.

19.02.2026 17:00 ๐Ÿ‘ 17765 ๐Ÿ” 6752 ๐Ÿ’ฌ 514 ๐Ÿ“Œ 530
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Every Day, Nukes Are Riding Right Past People Like You | Inkstick The United States government ships its nuclear materials, mostly on US interstates, in unmarked semi trucks.

"Nukes do not merely exist in a post-apocalyptic world โ€” they are driving past kids biking on interstate services roads to get out of doing school work. Barring change, they will soon be driving past many more."

19.02.2026 15:15 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Every Day, Nukes Are Riding Right Past People Like You Every day, nuclear weapons are transported in trucks riding along interstates that connect communities across the United States.

My wonderful @scovillepf.bsky.social @seantmanning.bsky.social has a great story in @inkstickmedia.com about biking alongside interstates during COVID. Those interstates could soon be carrying new plutonium "pits" - the radioactive core used in a new nuclear weapon: inkstickmedia.com/every-day-nu...

19.02.2026 19:53 ๐Ÿ‘ 15 ๐Ÿ” 8 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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What Americans Lose If Their National Center for Atmospheric Research Is Dismantled - Eos Five ways dismantling NCAR will cost the American people, and two ways to save it.

eos.org/opinions/wha...

27.01.2026 15:31 ๐Ÿ‘ 5407 ๐Ÿ” 2623 ๐Ÿ’ฌ 155 ๐Ÿ“Œ 120
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Court Rules Trump Administrationโ€™s Secret โ€œClimate Working Groupโ€ Violated Federal Law Court declared today that the Trump administration violated federal law when it secretly formed the โ€œClimate Working Groupโ€ and tasked it with writing a dangerously slanted report used as the basis fo...

A big win today: a federal court found that the Trump administrationโ€™s sham report attacking climate science was created in secret by a hand-picked set of climate policy opponents, violating the Federal Advisory Committee Act. Read our statement here:

30.01.2026 22:27 ๐Ÿ‘ 108 ๐Ÿ” 58 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 6
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Recent college & grad school alumni:
Work for 6 to 9 months with 1 of over 2 dozen NGOs in DC on international peace & security issues, including nuclear arms control, peacebuilding, & diplomacy. Apply by Feb. 27 to @scovillepf.bsky.social for the fall '26 semester. scoville.org

27.01.2026 19:30 ๐Ÿ‘ 11 ๐Ÿ” 14 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Congress Should Rein in Foolhardy Pursuit of Golden Dome Program A year ago today, President Donald Trump issued a sweeping Executive Order calling for an โ€œIron Dome for America.โ€ Statement by Dr. Laura Grego at the Union of Concerned Scientists.

My colleague @lauraegrego.bsky.social with a well-worth-your-time read on the fiasco that is Golden Dome, which Trump launched one year ago today: www.ucs.org/about/news/c...

28.01.2026 02:00 ๐Ÿ‘ 5 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Thomas Jefferson: "Were it left to me to decide whether we should have a government without newspapers or newspapers without a government, I should not hesitate a moment to prefer the latter." (And he was talking about the very problematic and partisan newspapers of the time...)

27.01.2026 22:41 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

UPDATE: After seeing this video, I informed ICE of my intent to visit the Baltimore facility today. I was told I would be denied entry.

Itโ€™s clear Trump's ICE would rather engage in a cover up. I will not stop pressing until we get answers. We need transparency & accountability.

27.01.2026 16:42 ๐Ÿ‘ 2719 ๐Ÿ” 954 ๐Ÿ’ฌ 196 ๐Ÿ“Œ 84
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I shared this video the other day.

Tonight @maddow had this lawyer on her show.

People are being tortured at Trump's detention camps Including children deprived of medical care.

PUTRID WATER
BUGS IN FOOD

Call your Senators & DEMAND they stop funding DHS!
202-224-3121

Do Not Fund ICE terrorism.

27.01.2026 06:00 ๐Ÿ‘ 738 ๐Ÿ” 536 ๐Ÿ’ฌ 42 ๐Ÿ“Œ 33

"First, they came for the journalists. We don't know what happened next." - Maria Ressa, founder of Rappler, at the @thebulletin.org #DoomsdayClock announcement.

27.01.2026 15:20 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

One could argue that it could have moved even closer to midnight, but it is hard to dispute that the world is closer to massive disaster than it was last year.

27.01.2026 15:13 ๐Ÿ‘ 8 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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๐Ÿšจ It is now 85 SECONDS TO MIDNIGHT on the #DoomsdayClock, the closest it has ever been to midnight.

Learn why here:

thebulletin.org/doomsday-clo...

27.01.2026 15:11 ๐Ÿ‘ 14 ๐Ÿ” 19 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 3
Statement from Michael and Susan Pretti
Parents of Alex Jeffrey Pretti

โ€œWe are heartbroken but also very angry.

Alex was a kindhearted soul who cared deeply for his family and friends and also the American veterans whom he cared for as an ICU nurse at the Minneapolis VA hospital. Alex wanted to make a difference in this world. Unfortunately, he will not be with us to see his impact.

I do not throw around the โ€˜heroโ€™ term lightly. However, his last thought and act was to protect a woman. The sickening lies told about our son by the administration are reprehensible and disgusting. Alex is clearly not holding a gun when attacked by Trumpโ€™s murdering and cowardly ICE thugs. He had his phone in his right hand and his empty left hand is raised above his head while trying to protect the woman ICE just pushed down, all while being pepper sprayed. 

Please get the truth out about our son. He was a good man. Thank you.

Statement from Michael and Susan Pretti Parents of Alex Jeffrey Pretti โ€œWe are heartbroken but also very angry. Alex was a kindhearted soul who cared deeply for his family and friends and also the American veterans whom he cared for as an ICU nurse at the Minneapolis VA hospital. Alex wanted to make a difference in this world. Unfortunately, he will not be with us to see his impact. I do not throw around the โ€˜heroโ€™ term lightly. However, his last thought and act was to protect a woman. The sickening lies told about our son by the administration are reprehensible and disgusting. Alex is clearly not holding a gun when attacked by Trumpโ€™s murdering and cowardly ICE thugs. He had his phone in his right hand and his empty left hand is raised above his head while trying to protect the woman ICE just pushed down, all while being pepper sprayed. Please get the truth out about our son. He was a good man. Thank you.

Kare 11 local news just read, in full, this statement from Michael and Susan Pretti, the parents of Alex Pretti.

"Please get the truth out about our son."

25.01.2026 00:43 ๐Ÿ‘ 24930 ๐Ÿ” 12859 ๐Ÿ’ฌ 200 ๐Ÿ“Œ 448
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Singing and praying in -22 degrees.

23.01.2026 17:23 ๐Ÿ‘ 870 ๐Ÿ” 237 ๐Ÿ’ฌ 12 ๐Ÿ“Œ 22
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The White House Military Office Army aide was on โ€œFootballโ€ duty earlier today as Emperor Trump left the World Economic Fourm in Davos. The ~45-pound satchel accompanies Trump 24/7, enabling him alone to authorize the use of any of our ~1,770 deployed nuclear weaponsโ€”up to 900 on alertโ€”at any time.

22.01.2026 21:46 ๐Ÿ‘ 5 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Newly Disclosed Records Show Trump Administrationโ€™s Unlawful Actions Related to Secretly Formed โ€œClimate Working Groupโ€ Newly disclosed records obtained by UCS and EDF about the Trump administrationโ€™s โ€œClimate Working Groupโ€ reveal brazenly unlawful actions behind the creation of a report that underlies the administrat...

The Trump admin "has been forced to acknowledge its unlawful actions and release gov. documents related to this case, which will allow the public to see for itself how the DOE and EPA worked in concert to solicit a report with predetermined conclusions aimed at overturning the Endangerment Finding."

22.01.2026 21:07 ๐Ÿ‘ 49 ๐Ÿ” 26 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 2
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Trump Administration Orders USDA Employees to Investigate Foreign Researchers They Work With The new directive asks workers to check the backgrounds of foreign nationals collaborating with the departmentโ€™s scientists for evidence of โ€œsubversive or criminal activity.โ€ Their names are being sen...

โ€œAsking scientists to spy on and report on their fellow co-authorsโ€ is a โ€œclassic hallmark of authoritarianism," said Dr Jennifer Jones, Director of the Center for Science & Democracy at UCS.

16.01.2026 15:09 ๐Ÿ‘ 41 ๐Ÿ” 25 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 4
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Trumpโ€™s Golden Dome excuse for Greenland grab is โ€˜detached from reality,โ€™ experts say Longstanding diplomatic agreements and an existing U.S. base already enable military expansion.

*gestures wildly* See? SEE??

Trumpโ€™s Golden Dome excuse for Greenland grab is โ€˜detached from reality,โ€™ experts say www.defenseone.com/threats/2026...

15.01.2026 19:17 ๐Ÿ‘ 26 ๐Ÿ” 10 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

AND the CNN story also cites another compelling report by my colleague Jennifer Knox, who did a deep dive on the pending expiration of New START. Take a look: www.ucs.org/sites/defaul...

16.01.2026 15:05 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

My colleague @dkspaulding.bsky.social inspired this excellent @cnn.com piece on #nuclear testing with this compelling story: blog.ucs.org/dylan-spauld...

16.01.2026 15:03 ๐Ÿ‘ 13 ๐Ÿ” 5 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Good news: World records longest ever lull in nuclear tests. Bad news: Itโ€™s on shaky ground | CNN The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, itโ€™s a positive one.

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, itโ€™s a positive one.

15.01.2026 23:09 ๐Ÿ‘ 57 ๐Ÿ” 10 ๐Ÿ’ฌ 6 ๐Ÿ“Œ 2

least of the differences between me & people I like like and folk like Trump & it matters

I got to hold ICANโ€™s Nobel Prize (nuclear disarmament work) & talk w/ @rayacheson.bsky.social

I am glad they were recognized & am proud to be part of broader work.

Itโ€™s not about me or you
Itโ€™s about us.

16.01.2026 14:45 ๐Ÿ‘ 39 ๐Ÿ” 8 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 1
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This may be my favorite sign off all time. It has a truth that cannot be denied.

14.01.2026 23:48 ๐Ÿ‘ 8 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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This is a community that cares deeply, spreads kindness, and seeks to build a better world.

Today we remembered the lives lost at the hands of ICE. Tomorrow we continue our work to peacefully build safer communities for all.

11.01.2026 18:17 ๐Ÿ‘ 8285 ๐Ÿ” 1898 ๐Ÿ’ฌ 150 ๐Ÿ“Œ 54

Thanks - that wasn't appearing in my thread for some reason.

11.01.2026 15:38 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0