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Martin B. Kalinowski @peacescience.bsky.social · 03/09/2026

The growing demand for tritium from fusion startups raises two critical questions: (1) can legacy stocks and existing production capacities meet this demand? (2) are existing export control and accountancy procedures sufficient? peacescience.net/2026/08/31/n...

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Alex Wellerstein @wellerstein.bsky.social · 01/09/2026

I fell into a little rabbit hole this morning... I've been doing some fallout modeling, and it occurred to me to ask whether swapping out a U-238 tamper in a thermonuclear secondary for a U-235 one, as some modern US TN weapon designs are alleged to do, would change the intensity of fallout.

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Martin B. Kalinowski @peacescience.bsky.social · 04/08/2026

The highest ever in Austria recorded temperature was today in Vienna. I was there as I was at Neusiedl in 2013.

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Martin B. Kalinowski @peacescience.bsky.social · 23/07/2026

Interesting blog post by Peace Science Collaboration quoting the paper by Kalinowski & Trillo (2025) about remote observations of historic nuclear tests some of which were conducted underground and engineered for containment. peacescience.net/2026/07/23/b...

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Martin B. Kalinowski @peacescience.bsky.social · 30/03/2026

To move fusion commercialisation to success, some possible hurdles need to be tackled. Consider this: peacescience.net/2026/03/30/i...

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Martin B. Kalinowski @peacescience.bsky.social · 25/03/2026

First nuclear-powered rocket: NASA's announced plans include launching Space Reactor-1 Freedom, a nuclear electric propulsion rocket, to Mars in December 2028. www.ans.org/news/2026-03...

ans.org

NASA announces plan for space nuclear propulsion by 2028

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Martin B. Kalinowski @peacescience.bsky.social · 22/03/2026

If you are interested in the radioactive legacy of atmospheric nuclear testing this is for you. This project has just started and is very promising. peacescience.net/2026/03/21/g...

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Martin B. Kalinowski @peacescience.bsky.social · 20/03/2026

First Light Fusion announces a conceptual breakthrough with the potential to generate a net tritium surplus-per-plant of 25 kg annually, more than the world’s current civilian inventory. This addresses a key barrier to fusion energy scale-up. firstlightfusion.com/media/first-...

firstlightfusion.com

First Light Fusion | News & Media | First Light Fusion validates high tritium breeding performance of FLARE concept, addressing key barrier to fusion energy scale-up

First Light Fusion’s hub for news and media insights, blogs and academic external publications.

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Martin B. Kalinowski @peacescience.bsky.social · 23/02/2026

Which radioisotopes still remain and where have the 528 atmospheric nuclear tests been conducted? Peace Science Collaboration has put data together and funneled them through Python to put them on a map. Ready to support science and disarmament diplomacy. peacescience.net/2026/02/23/e...

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Martin B. Kalinowski @peacescience.bsky.social · 16/02/2026

Helion is the first private fusion energy startup to use deuterium-tritium fuel. Their 7th generation Polaris prototype set new fusion industry benchmark becoming the first privately developed fusion energy machine to demonstrate deuterium-tritium (D-T) fusion. www.helionenergy.com/articles/hel...

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Martin B. Kalinowski @peacescience.bsky.social · 30/01/2026

Tritium production is a key bottleneck for making nuclear fusion power generation a reality. Here is important progress under preparation: “Moving breeding blanket technology from theory to real-world application is crucial in realizing a path to fusion energy“ www.ornl.gov/news/ornl-an...

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Martin B. Kalinowski @peacescience.bsky.social · 28/01/2026

Great to see that my book on "International Control of Tritium for Nuclear Nonproliferation and Disarmament" is gaining fresh interest again. The topic discussed in this blog post is just one example for this renewed interest. peacescience.net/2026/01/28/r...

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Martin B. Kalinowski @peacescience.bsky.social · 11/01/2026

What does it mean for job seekers that the UN is currently facing challenges? What are future trends in human resources at international organisations? After strong expansion of UN’s workforce and its subsequent stabilisation, a new phase is evolving. peacescience.net/2026/01/11/u...

UN Jib Trends: From Expansion to Transformation. This is the title of a blog post to which this post is linking.

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Martin B. Kalinowski @peacescience.bsky.social · 09/01/2026

We proudly present that the homepage of Peace Science Collaboration went live. Welcome to explore peacescience.net

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Martin B. Kalinowski @peacescience.bsky.social · 05/01/2026

Call for Application: African Atomic Policy Lab (AAPL), a 7-month program for the next generation of African nuclear policy experts and leadership in global policy debates. Organized by ISYP Africa Project. Apply by 20 January: isyp.org/african-atom... Our support: peacescience.net/2026/01/05/c...

isyp.org

African Atomic Policy Lab (AAPL)

The African Atomic Policy Lab (AAPL) is a 7-month comprehensive virtual program designed to develop the next generation of African nuclear policy experts and amplify African leadership in global nu…

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Martin B. Kalinowski @peacescience.bsky.social · 29/12/2025

Excited to share my research highlights for 2025! The PAGEOPH Topical Issue on Nuclear Explosion Monitoring and Verification (doi.org/10.1007/s000...) has most of my papers. Check out the personalised summary of my Springer Nature publications & impact in 2025: yir.sn.pub/26Agis #SNAuthors #YiR2025

yir.sn.pub

Year in research 2025

Explore a personalised summary of your research's reach and impact in 2025 and share highlights with friends and colleagues.

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Martin B. Kalinowski @peacescience.bsky.social · 24/10/2025

Hague Appeal for Future Generations: Action now to secure Peace and protect the Future The Hague and New York: United Nations Day, October 24, 2025 www.worldfuturecouncil.org/wp-content/u...

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Martin B. Kalinowski @peacescience.bsky.social · 11/10/2025

US’s 20-point peace plan: 1. Gaza will be a deradicalised terror-free zone that does not pose a threat to its neighbours. 2. Gaza will be redeveloped for the benefit of the people of Gaza, who have suffered more than enough. Read the full plan here: en.wikipedia.org/wiki/Donald_....

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Martin B. Kalinowski @peacescience.bsky.social · 12/09/2025

Presentations of Peace Science Collaboration at #SnT2025, part II.

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Martin B. Kalinowski @peacescience.bsky.social · 12/09/2025

Presentations of Peace Science Collaboration at #SnT2025, part I.

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Martin B. Kalinowski @peacescience.bsky.social · 08/09/2025

The work I am presenting at #SnT2025 builds on a unique database of high quality #tadioxenon stack emissions from PNNL‘s STAX project. Highlights of new findings are covered by one oral and two poster presentations including a solution to a big question that was open for 20 years. ctbto.info/SnT2025

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Martin B. Kalinowski @peacescience.bsky.social · 06/09/2025

Peace Science Collaboration is delighted to announce common presentations next week at the #SnT2025 Conference of the @ctbto.bsky.social in Vienna. You can still register and participate virtually in case you cannot make it to the Hofburg in Vienna, Austria. 🌐 Info.: ctbto.info/SnT2025

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Martin B. Kalinowski @peacescience.bsky.social · 06/09/2025

It was a great pleasure for me to give a talk at the first online edition of the NewComers4Nuclear (NC4N) Summer School 2025, co-organised with WiN Global and Women in Nuclear Innovation (WiNI) Group of Expertise. The full program can be found here: drive.google.com/file/d/1dkbs...

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Martin B. Kalinowski @peacescience.bsky.social · 03/09/2025

Syria permits the IAEA to visit the Deir al-Zor site and conduct inspections that should bring this matter to a clear and final conclusion. Report by Reuters: www.reuters.com/world/middle... The background story reported in 2009 is here: www.armscontrol.org/act/2009-12/...

armscontrol.org

IAEA Disputes Syrian Uranium Claims | Arms Control Association

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Martin B. Kalinowski @peacescience.bsky.social · 19/08/2025

How to produce tritium, the fuel required to start up fusion reactors? Terence Tarnowsky, a physicist at Los Almos National Laboratory (LANL), proposes to us a reactor design driven by a particle accelerator to produce tritium from nuclear waste. www.acs.org/pressroom/pr...

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Martin B. Kalinowski @peacescience.bsky.social · 12/08/2025

An Iranian delegation travelled to Russia last year to visit institutes producing dual-use technologies, including electron accelerators and klystrons and radioactive isotopes such as tritium. www.iranintl.com/en/202508057...

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Martin B. Kalinowski @peacescience.bsky.social · 31/07/2025

This was the largest earthquake since the Tōhoku Earthquake, near the coast of Japan with Magnitude: 9.1 on March 11, 2011. Events >8.7 occur roughly once per decade.

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Union of Concerned Scientists @ucs.org · 10/04/2025

So you agree? We shouldn’t restart explosive nuclear testing? Brandon Williams, nominee to lead the National Nuclear Security Administration, said he would not advise new explosive testing and we should “rely on the scientific information.” Learn more↘️ www.nytimes.com/2025/04/08/s...

media.tenor.com

a woman is talking to a man and asking him if he agrees .

ALT: a woman is talking to a man and asking him if he agrees .

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ICAN @nuclearban.bsky.social · 04/04/2025

New podcast alert! 🎧 We’re excited to share a powerful limited series from UNODA & UNODA Vienna & UN Youth 4 Disarmament 🇺🇳. In moving conversations, youth leaders speak with survivors of the Hiroshima & Nagasaki nuclear bombings.🎙️ Listen here on Spotify: open.spotify.com/show/7DnwBfC... #NuclearBan

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ICAN @nuclearban.bsky.social · 25/03/2025

🗣️Happening tomorrow, don't miss out on this webinar with young nuclear disarmament advocates and Gorbachev-Schultz Youth Award Winners. Why Attend? ➡️ Discover how young changemakers are shaping a safer world. ➡️ Learn how you can join the movement. Register: charterforcompassion.org/news-events/...

charterforcompassion.org

Youth Voices For A Nuclear-Free Future : News + Events : Charter for Compassion

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Hans Kristensen @nukestrat.bsky.social · 25/03/2025

Trump administration's first threat assessment flips threat order and begins with nonstate criminals/terrorists before state actors. Last year's assessment began with states. China "probably" fielding DF-27. Nothing new on Russia. Iran not building nukes. www.intelligence.senate.gov/hearings/ope...

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Union of Concerned Scientists @ucs.org · 19/03/2025

“As we navigate the challenges of climate change, [future climate] scenarios remind us that the future remains open—and that our collective actions today will determine the climate reality we pass on to future generations.” Learn more in UCS's Delta Merner's blog:

blog.ucs.org

How Do 'Future Climate Scenarios' Shape Climate Science and Inform Policy?

A deeper look at why emissions scenarios are essential for understanding climate change impacts and mitigation strategies.

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Martin B. Kalinowski @peacescience.bsky.social · 16/03/2025

The annual meeting of the Working Group on Physics and Disarmament took place at the spring meeting of the German Physical Society (DPG) in Bonn. See speakers and selected slides for some highlights regarding nuclear threat risks reduction and nuclear arms control verification.

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Oliver Meier @olivermeier.bsky.social · 14/03/2025

📢Don't miss it: As ceasefire in Ukraine is discussed, @theeln.bsky.social briefing with Katia Glod @alxgraef.bsky.social @janekinninmont.bsky.social and former #OSCE Secretary General Marc Perrin de Brichambaut at 15:00 CET this Friday afternoon will provide crucial background and analysis‼️ 👇

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Friedrich-Ebert-Stiftung @fesonline.bsky.social · 14/03/2025

Waffenstillstand in der #Ukraine? Der Ball liegt in Putins Spielfeld. Doch was will der russische Präsident in Bezug auf die Ukraine, auf Europa & global? Dazu ein paar Gedanken unseres Kollegen @alexyus.bsky.social , Leiter unseres Russland-Programms. #Russland www.ipg-journal.de/rubriken/aus...

ipg-journal.de

Alle Augen auf Moskau

Trumps Diplomatie sorgt für Bewegung im Ukraine-Krieg – doch Moskau taktiert weiter. Was will der russische Präsident?

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PRIF @prif.org · 14/03/2025

On March 5, Syrian caretaker Foreign Minister al-Shaibani announced that the country would return to compliance with the CWC and eliminate its chemical weapons program. Una Jakob analyzes these developments and what needs to be done going forward. Read now on #PRIFblog. blog.prif.org/2025/03/14/c...

blog.prif.org

Chemical Weapons Disarmament in Syria – A Door Opening? - PRIF BLOG

On March 5, 2025, the caretaker Foreign Minister of Syria, Asaad Hassan al-Shaibani, delivered a speech at the Organisation for the Prohibition of Chemical Weapons (OPCW) in which he promised that his...

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Reposted by Martin B. Kalinowski

Hans Kristensen @nukestrat.bsky.social · 14/03/2025

Two B-52 bombers have departed Fairford, one heading northeast the other northwest. An overflight of Oslo is scheduled for later. Of the two bombers, one (60-0037) is nuclear-capable, the other (60-0023) is conventional-only. No nukes are carried in peacetime.

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Martin B. Kalinowski @peacescience.bsky.social · 13/03/2025

Prof. Frank von Hippel (Princeton University) gave an invited talk at the German Physical Society Spring Meeting in Bonn on „U.S. Physicists and Nuclear Arms Control During the Next Four Years“. On the question „How much is enough“ he replies: „What about deterrence without nuclear weapons?“

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Martin B. Kalinowski @peacescience.bsky.social · 10/03/2025

Great overview on what scientists do towards nuclear disarmament at the Symposium on Nuclear Threats and Challenges – Japanese and German Views, part of the DPG Spring Meeting. Thanks to Prof Götz Neuneck for the invitation.

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Stephen Schwartz @atomicanalyst.bsky.social · 09/03/2025

Tell me again how “genius” Trump is playing five-dimensional chess: “These programs enhance U.S. security,” said Laura Holgate, a former American ambassador to the I.A.E.A. and a top adviser to President Barack Obama on nuclear terrorism. She added: “This is not charity. It’s in our self-interest.”

nytimes.com

Trump Freeze on Aid to Nuclear Inspectors Undercuts His Iran Policy (Gift Article)

The president’s halt of foreign aid upended two U.S. programs that help the International Atomic Energy Agency find clues about Iran’s drive to build atomic bombs.

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Scientists for Global Responsibility @responsiblesci.bsky.social · 05/03/2025

This International Day for Disarmament and Non-Proliferation Awareness, we must continue to promote the importance of peace through dialogue, ending armed conflicts, and building a world free from the suffering caused by weapons and the threat of nuclear war. www.un.org/en/observanc... #3MSP #TPNW

un.org

International Day for Disarmament and Non-Proliferation Awareness | United Nations

International Day for Disarmament and Non-Proliferation Awareness is devoted to educate in the areas of disarmament and non-proliferation, especially with regard to weapons of mass destruction, but al...

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Martin B. Kalinowski @peacescience.bsky.social · 26/02/2025

Happy to hear briefing by @ctbto.bsky.social about the progress in preparation of #SnT2025, the CTBT: Science and Technology conference that will take place from 8 to 12 September in the Hofburg Palace, Vienna. The door is open for registration at conferences.ctbto.org/event/30/

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Martin B. Kalinowski @peacescience.bsky.social · 28/12/2024

The #CTBT: Science and Technology Conference is the flagship event of the @ctbto.bsky.social. If you have stakes in nuclear explosion monitoring or on-site inspection research and innovation, consider participating and submitting an abstract to #SnT2025. The deadline is approaching.

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Martin B. Kalinowski @peacescience.bsky.social · 11/12/2024

New study: near-surface beryllium-7 could be used to predict the upcoming phase of #ENSO (El Niño Southern Oscillation), see doi.org/10.1016/j.je..., and to predict onset of #monsoon, see www.nature.com/articles/s41... #Be-7 is observed by the international monitoring system operated by the #CTBTO.

Cosmic rays generate beryllium-7 in the stratosphere. The figure shows the global atmospheric circulation cells like Hadley cell and Ferrel cell. These transport beryllium-7 down toothed Earth surface where it observed by radioactivity sensors.

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Nuclear Threat Initiative @nti.org · 11/12/2024

Nuclear disarmament verification experts from around the world are gathered in Geneva for the #IPNDV's week-long meeting. Learn about the partnership's decade of work on nuclear disarmament verification. www.ipndv.org

ipndv.org

The International Partnership for Nuclear Disarmament Verification

The International Partnership for Nuclear Disarmament Verification (IPNDV) is an ongoing initiative that includes more than 25 countries with and without nuclear weapons. Together, the Partners are…

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