The United Nations Scientific Committee on the Effects of Atomic Radiation assesses and reports levels and effects of ionizing radiation to the General Assembly

Joined May 2022
39 Photos and videos
UNSCEAR retweeted
Forty years ago, an explosion at the Chornobyl nuclear power plant exposed more than 8 million people to radiation. The #UNVienna-based @unscear has been assessing the radiation exposure & health impacts of the accident. Learn more about the work: bit.ly/3VfuZcM
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UNSCEAR retweeted
Press release from @unscear - UN scientific report confirms natural background radiation remains the dominant source of public exposure worldwide - more here: unis.unvienna.org/unis/en/pr…
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4 Dec 2025
🎉 70 years of UNSCEAR! Since 1955, UNSCEAR has led global efforts to assess radiation effects on health & environment. From Chernobyl to Fukushima, our science shapes safety worldwide. #UNSCEAR70 #ScienceForSafety
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1 Jul 2025
UNSCEAR published its 2024 Report Vol. I, scientific annex A, which provides a comprehensive evaluation of the risks, mechanisms, and epidemiological evidence related to the occurrence of second primary cancers in patients treated with radiotherapy ➡️unscear.org/unscear/en/publi…
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27 Jun 2025
UNSCEAR presents findings of its recently published 2024 Report annex A on Second primary cancer after Radiotherapy @iaeaorg safety standards meeting 👉unscear.org/unscear/en/publi…
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23 Jun 2025
Major scientific milestone: At its 72nd session, UNSCEAR approved landmark updates on radiation risks, offering most comprehensive assessments on cancer and circulatory diseases linked to ionizing radiation. ➡unis.unvienna.org/unis/en/pr… #CancerResearch #CardiovascularRisks
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19 Jun 2025
This week, radiation science takes centre stage @UN_Vienna, where over 160 experts from around the world and observers are gathered for the 72nd Session of UNSCEAR. Together, they are reviewing progress and evaluations on some of today’s most critical topics
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UNSCEAR retweeted
13 Jun 2025
Press release from #UNSCEAR - UN report highlights long-term cancer risks following radiotherapy - more here ➡ unis.unvienna.org/unis/en/pr…
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UNSCEAR retweeted
26 Apr 2025
#OnThisDay in 1986, an explosion at #Chernobyl nuclear power plant sent a #radioactive cloud over parts of the Soviet Union, now #Belarus, #Ukraine & #RussianFederation. The effects are still being felt #today. - un.org/en/observances/cherno… @unscear
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29 Oct 2024
On 21 October, the Fourth Committee of the @UN General Assembly commended #UNSCEAR’s work, presented by its chair S. Baatout, and unanimously adopted the draft resolution on the effects of atomic radiation. press.un.org/en/2024/gaspd81…
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23 Sep 2024
#UNSCEAR Chair (S Baatout) and Vice-Chair (A. Auvinen) successfully presented the ongoing and future programme of work of the Committee at the 2024 European Radiation Research Society conference in Portugal
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19 Sep 2024
On 18 September, the #EU Ambassador C. Hallergård, #UNSCEAR Chair, S Baatout, EC (M Goulart) and IAEA (H. Vanderhove) presented and discussed the joint research activities and EC-UNSCEAR MoU at #IAEAGC68
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12 Sep 2024
For those attending next weeks 68th #IAEA General Conference, please join us join us for a side event on 18 September from 16:30 to 17:30, discussing the synergies between #Euratom and #UNSCEAR to improve knowledge of the levels and effects of ionizing radiation.
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6 Sep 2024
On 25 June OECD/NEA and UNSCEAR secretariat signed an MoU for collaboration, sharing information and analysis on radiation science and research. This is a significant achievement and a very important step forward in strengthening the collaboration between our two organizations.
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17 Jul 2024
At the IRPA16 congress in Orlando (7-12 July), UNSCEAR presented its comprehensive evaluations, future programme of work and strategy for data collection on medical, occupational and public exposures.
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UNSCEAR retweeted
12 Jun 2024
Last month, senior officials from UNSCEAR and ICRP met to sign an agreement that strengthens our collaboration moving forward. As we look to update our General Recommendations, this agreement will have a positive impact on the System of RP! ow.ly/USs250SgVQh
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12 Jun 2024
During the 71st session Assistant Secretary-General of the @UN and Deputy Executive Director of @UNEP Elizabeth Mrema addressed the Committee with high appreciation and importance of its independent scientific work.
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Around 50 school pupils are taking over @‌UN_Vienna to show how they’d like the city to look in the future! They are participating in a mock UN conference and an art exhibition to mark #WorldEnvironmentDay.🎨🌆🌲 They too are #GenerationRestoration!
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UNSCEAR retweeted
24 May 2024
Press release - UN Scientific Committee @unscear endorses groundbreaking reports on second primary cancer after radiotherapy and on public exposure to ionizing radiation - more here ➡ unis.unvienna.org/unis/en/pr…
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21 May 2024
Over 180 experts of the Committee and observers are convening in Vienna for the 71st Session
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