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#WorldTeachersDay Dag van de Leraar 2025
2025-10-05
De Dag van de Leraar, ook Dag van de Leerkracht(en) genoemd, is een jaarlijks terugkerende speciale dag om waardering te tonen voor onderwijzers.
De dag wordt gevierd in zo’n 88 landen wereldwijd. De datum is sinds 1962 verschillende keren veranderd, waardoor de dag in verschillende landen op verschillende datums gevierd wordt. In onder andere België, Duitsland, Nederland en het Verenigd Koninkrijk valt de dag op 5 oktober. Op deze dag wordt de waardering van leerkrachten benadrukt en is er aandacht voor het onderwijs als belangrijke factor in de maatschappij. Dit kan soms gepaard gaan met vieringen om hen te eren voor hun speciale bijdrage in een specifiek domein, of voor de gemeenschap in het algemeen. Er vinden verschillende evenementen plaats om de dag te markeren, van lezingen en spreekbeurten tot theater. Het is voor veel scholen ook het moment om het onderwijzend personeel een bedankje te geven en hun leraren en leraressen in het zonnetje te zetten. Van scheurkalender en boekenbon tot een dagje uit worden er geschenken gegeven aan leraren en leraressen. Steeds vaker geven ook ouders een presentje aan de leraar of lerares van hun kinderen.
Links:
World Teachers’ Day

Nobel Prize in Physiology or Medicine 2025
2025-10-06 11:45 - 12:45 (Europe/Amsterdam)
The Nobel Prize in Physiology or Medicine 2025 was awarded to Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi “for their discoveries concerning peripheral immune tolerance.”
The body’s powerful immune system must be regulated, or it may attack our own organs. Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi are awarded the Nobel Prize in Physiology or Medicine 2025 for their groundbreaking discoveries concerning peripheral immune tolerance that prevents the immune system from harming the body.
Links:
Nobel Prize in Physiology or Medicine 2025

Nobel Prize in Physics 2025
2025-10-07 11:45 - 12:30
The Nobel Prize in Physics 2025 was awarded to John Clarke, Michel H. Devoret and John M. Martinis “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”
A major question in physics is the maximum size of a system that can demonstrate quantum mechanical effects. This year’s Nobel Prize laureates conducted experiments with an electrical circuit in which they demonstrated both quantum mechanical tunnelling and quantised energy levels in a system big enough to be held in the hand.
Links:
Nobel Prize in Physics 2025
Things Going Thru Walls? Let’s Discuss the 2025 Nobel Prize in Physics

The Nobel Prize in Chemistry 2025
2025-10-08 11:45 - 12:15
The Nobel Prize in Chemistry 2025 was awarded to Susumu Kitagawa, Richard Robson and Omar M. Yaghi “for the development of metal-organic frameworks.”
The Nobel Prize laureates in chemistry 2025 have created molecular constructions with large spaces through which gases and other chemicals can flow. These constructions, metal-organic frameworks, can be used to harvest water from desert air, capture carbon dioxide, store toxic gases or catalyse chemical reactions.
Links:
The Nobel Prize

The Nobel Prize in Literature 2025
2025-10-09 13:00 - 14:00
The Nobel Prize in Literature for 2025 is awarded to the Hungarian author László Krasznahorkai, “for his compelling and visionary oeuvre that, in the midst of apocalyptic terror, reaffirms the power of art”.
Links:
The Nobel Prize

Paddenstoelentelling 2025
2025-10-10 - 2025-10-12 | Nederland, Nederland
Tijdens de Landelijke Paddenstoelentuintelling wordt gekeken hoe het gaat met de verschillende soorten paddenstoelen in onze tuinen.
Door het verdwijnen van natuur, klimaatverandering, en andere factoren staan veel paddenstoelsoorten onder druk. Paddenstoelen kun je op verschillende plekken in je tuin vinden, in je gazon, border, op houtsnippers, op of bij levende of dode bomen, op of tussen strooisel zoals bladeren en takjes of op de composthoop. Hoe gaat het met de paddenstoelen in onze tuinen? Tel mee met de paddenstoelentuintelling en help paddenstoelen beter in kaart te brengen! Hoeveel verschillende soorten paddenstoelen komen er in de Nederlandse tuinen voor? Welke soort zagen we het vaakst? De belangrijkste resultaten vind je na de telling op deze pagina.
Links:
Paddenstoelentelling
Paddenstoelen zoekkaart

The Nobel Peace Prize 2025
2025-10-10 11:00 - 11:45
The Nobel Peace Prize 2025 was awarded to Maria Corina Machado “for her tireless work promoting democratic rights for the people of Venezuela and for her struggle to achieve a just and peaceful transition from dictatorship to democracy.”
Links:
Nobel Peace Prize 2025

#EarthScienceWeek 2025
2025-10-12 - 2025-10-18
Since October 1998, the American Geosciences Institute has organized the Earth Science Week, a worldwide event to help the public gain a better understanding and appreciation for the Earth sciences and to encourage stewardship of the Earth.
Our energy future calls for navigating complex choices about how we power our homes, businesses, and transportation. These decisions require a deep understanding of their environmental, social, and economic impacts, and how they align with our personal and societal values. 2025 Earth Science Week theme, “Energy Resources for Our Future” encourages us to become informed energy consumers and to actively work towards a sustainable future that ensures a high quality of life for generations to come.
Links:
Earth Science Week
Geologic Map Day 2025

Ada Lovelace Day 2025
2025-10-14
Ada Lovelace Day is an annual event held on the second Tuesday of October to celebrate and raise awareness of the contributions of women to Science, Technology, Engineering, and Mathematics (STEM) fields, it is named after mathematician and computer science pioneer Ada Lovelace.
It started in 2009 as a “day of blogging” and has since become a multi-national event with conferences. The day was founded in the United Kingdom in 2009 by Suw Charman-Anderson on the second Tuesday in October as a means of raising awareness about the contributions of women to STEM fields. In 2022, Charman-Anderson announced that this would be the last year in which the organization that she founded, Finding Ada, would organize an annual flagship Ada Lovelace Day event in England. However, the Royal Institution stepped in with funding and the organization Ada Lovelace Day has carried on. Since its inception, Ada Lovelace Day has become international in scope, with events organized by groups ranging from museums, professional societies, universities, colleges and high schools. While Ada Lovelace Day is the second Tuesday of October, events celebrating women in STEM typically span the period of October and November, and include diverse activities ranging from in-person and virtual Wikipedia Editathons to panel discussions and film screenings. While this celebration of the often overlooked contributions of women in STEM was named for Ada Lovelace, activities have expanded since 2009 to highlight the diverse contributions of women in STEM over time and different countries. Events have featured policy initiatives and scholarship relating to equity, diversity and inclusion that provide spaces and platforms for dialogue and discussion about how unconscious bias(es) function to create barriers to women’s participation and advancement in the professional fields of STEM.
Links:
Ada Lovelace Day

World Standards Day / Wereld Normalisatie (standaarden) dag 2025
2025-10-14
World Standards Day is celebrated internationally each year on 14 October, the day honours the efforts of the thousands of experts who develop voluntary standards within standards development organizations such as the American Society of Mechanical Engineers (ASME), International Electrotechnical Commission (IEC), International Organization for Standardization (ISO), International Telecommunication Union (ITU), Institute of Electrical and Electronics Engineers (IEEE) and Internet Engineering Task Force (IETF).
The aim of World Standards Day is to raise awareness among regulators, industry and consumers as to the importance of standardization to the global economy. 14 October was specifically chosen to mark the date, in 1946, when delegates from 25 countries first gathered in London and decided to create an international organization focused on facilitating standardization. Even though ISO was formed one year later, it wasn’t until 1970 that the first World Standards Day was celebrated.
Links:
World Standards Day – WSC
World Standards Day – ISO

Bellingcat Open Source Challenges – LIVE!
2025-10-15 17:00 - 18:00
Links:
Bellingcat Open Source Challenges

Geologic Map Day 2025
2025-10-17
Geologic Map Day is a special event designed to promote awareness of geologic mapping and its vital importance to society.
As an extension of the National Cooperative Geologic Mapping Program, Geologic Map Day focuses the attention of students, teachers, and the general public on the creation, study, uses, and significance of geologic maps for education, science, business, and a variety of public policy concerns. Organizing partners of Geologic Map Day are the United States Geological Survey, the American Association of State Geologists, the Geological Society of America, and the American Geosciences Institute. The event is celebrated on the Friday of AGI’s Earth Science Week, a public awareness campaign that reaches over 50 million people each year with educational resources, information, and activities promoting awareness of Earth science.
Links:
Geologic Map Day

In de geschiedenis
2025-10-18, 2025-10-29, 2025-10-30, 2025-10-31, 2025-11-01, 2025-11-02, 2025-11-03, 2025-11-04 and 2 more dates
Links:
Wikipedia

ICALEPCS 2025 - The 20th International Conference on Accelerator and Large Experimental Physics Control Systems 2025
2025-10-20 - 2025-10-26 | Chicago, Chicago, United States
The International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS) is a biennial series of conferences inaugurated by a number of control system specialists from accelerator laboratories around the world.
This series of conferences facilitates fruitful collaborations among the world’s control system specialists from major scientific installations and industries, such as particle accelerators, light sources, laser facilities, telescopes, tokamaks, etc. The series of ICALEPCS conferences started in 1987 in Villars-sur-Ollon (Switzerland), hosted by CERN. The conferences subsequently rotated between three major areas of the world: America (including North, Central and South America), Asia (including Oceania) and EMEA (Europe including Russia, the Middle East and Africa). Over the years the conferences have seen a growing number of participants, institutions, and countries.
Links:
ICALEPCS 2025 – The 20th International Conference on Accelerator and Large Experimental Physics Control Systems 2025

Kenniscoalitie Verkiezingsdebat: De kracht van kennis; kiezen voor vooruitgang (TV webcast)
2025-10-21 15:30 - 17:00 | Nieuwspoort, Bezuidenhoutseweg 67, Den Haag, Nederland
Kennis, onderzoek en innovatie; belangrijke onderwerpen voor de toekomst van Nederland, toch zijn het vaak geen thema’s die veelvuldig voorbijkomen in verkiezingstijd en om die reden organiseert de Kenniscoalitie op 21 oktober 2025 het verkiezingsdebat voor onderzoek en wetenschap.
Tijdens het debat gaan onder andere Luc Stultiens (GroenLinks/PvdA), Claire Martens-America (VVD), Jan Paternotte (D66) en Marcel Hanegraaff (CDA) met elkaar in gesprek over de toekomst van kennis, onderzoek en innovatie in Nederland. Daarbij komen thema’s aan bod die niet alleen het hoger onderwijs en de wetenschap raken, maar ook de samenleving en economie als geheel. Zo wordt er gesproken over de manier waarop onderzoeksfinanciering is ingericht en welke keuzes daarbij gemaakt moeten worden. Ook staat de vraag centraal hoe Nederland zijn innovatiekracht kan versterken om duurzame economische groei te realiseren. Daarnaast wordt stilgestaan bij de internationale concurrentie en de vraag hoe we talent kunnen behouden en aantrekken, in samenhang met het Europese Meerjarig Financieel Kader. Tot slot gaat het over de waarde van onderzoek zelf, van fundamenteel en ongebonden onderzoek tot de bescherming van academische vrijheid. Marcel Levi, voorzitter van de Kenniscoalitie, zal de deelnemers welkom heten met een prikkelende introductie. Onder deskundige begeleiding zullen politici van verschillende partijen verder met elkaar in gesprek gaan.
Links:
Verkiezingsdebat: De kracht van kennis; kiezen voor vooruitgang
Verkiezingsdebat: De kracht van kennis

#MoleDay / Wereld Mol Dag 2025
2025-10-23 06:02 - 18:02
Mole Day is an unofficial holiday celebrated among chemists, chemistry students and chemistry enthusiasts on October 23, between 06:02 and 18:02 (6:02 pm), making the date 6:02 10/23 in the American style of writing dates.
The time and date are derived from the Avogadro number, which is approximately 6.02×1023, defining the number of particles (atoms or molecules) in one mole (mol) of substance, one of the seven base SI units. Schools around the world celebrate Mole Day with various activities related to chemistry and/or moles. For a given molecule, one mole is a mass (in grams) whose number is equal to the molar mass of the molecule. For example, the water molecule has an molar mass of 18, therefore one mole of water weighs 18 grams. Similarly, a mole of neon has a molar mass of 20 grams. In general, one mole of any substance contains Avogadro’s Number of molecules or atoms of that substance. This relationship was first discovered by Amedeo Avogadro (1776-1858) and he received credit for this after his death.
Links:
Mole Day
Mol (eenheid)

#NOSF2025 Open Science Festival 2025
2025-10-24 | RUG Academy Building Groningen, Broerstraat 5, Groningen, Nederland
On 24 October 2025, the fifth edition of the Netherlands Open Science Festival will take place at the University of Groningen, this Dutch festival is for the entire open science community and beyond.
Professional research support staff and researchers across all disciplines are invited. The day will be full of interactive sessions, an information market, and plenty of opportunities to mingle and meet. Open Science or Open Scholarship stands for the transition to a new, more open and participatory way of conducting, publishing and evaluating scholarly research. Central to this concept is the goal of increasing cooperation and transparency in all research stages. This is achieved, among other ways, by sharing research data, publications, software, tools and results as early and open as possible. According to the UNESCO recommendation on Open Science, Open Science is aiming to make scientific knowledge openly available, accessible and reusable for everyone, to increase scientific collaborations and sharing of information for the benefits of science and society. Using open methods can lead to more robust scientific results, more efficient research and (faster) access to scientific results for everyone.
Links:
Open Science Festival

Hendrik de Waard Lecture | Redefining Time Through Nuclear Physics
2025-10-27 20:00 - 22:00 | RUG Academy Building Groningen, Broerstraat 5, Groningen, Nederland
In this Hendrik de Waard lecture, experimental physicist Kjeld Beeks shows how cutting-edge nuclear research is redefining the present and shaping the future, while reflecting on its societal and ethical implications.
From GPS to quantum experiments, precise timekeeping drives modern life. Atomic clocks are already extraordinarily accurate, yet researchers are now aiming higher with a nuclear clock that measures time using the motion of an atomic nucleus. The isotope thorium-229, uniquely possessing a laser-accessible low-energy state, lies at the centre of this effort. When embedded in transparent crystals and probed with vacuum-ultraviolet light, this nuclear transition provides a reference less sensitive to environmental noise than electronic transitions. Current work focuses on engineering host materials, controlling and quenching excitations, and understanding how crystal defects shape nuclear behaviour; effectively building a nuclear clock. This breakthrough could enable innovations in navigation, sensing, and communications, as well as unlock new insights in fields such as relativity, dark matter, and fundamental constants. Yet, nuclear science unfolds within a societal landscape shaped by both benefits and controversies.
Links:
Redefining Time Through Nuclear Physics

#WorldCodingDay 2025
2025-10-29
Coding is more than just a technical skill; it blends logic with creativity, connecting various disciplines, including science, technology, communication, engineering, mathematics, arts, and languages. Learning to code fosters logical thinking, enhances problem-solving skills, and sparks innovation.
Computer code is the language that narrates and defines the digital world we live in. It is material to the development of Artificial Intelligence (AI) systems that permeate all facets of our lives. It is therefore concerning that there is a severe lack of diversity, inclusion, and representation among those who master this language. Without diverse voices in coding and AI development, the digitalization of our society risks reflecting and reinforcing biases and perpetuating inequalities. Recognizing the importance of coding to our digital world, UNESCO Member States designated 29 October World Coding Day. It was celebrated for the first time in 2024.
Links:
World Coding Day

Kenniscafé Groningen : Tot de tanden toe bewapenen
2025-10-30 20:00 - 21:30 | Forum Groningen, Nieuwe Markt 1, Groningen, Nederland
Jelte Posthumus in gesprek met Marcel Brus, Willem de Haan en Kim Bootsma over remilitarisering.
Koning Willem-Alexander verklaarde dit voorjaar dat Nederland zich “tot de tanden toe moet bewapenen”. Sinds de Russische inval in Oekraïne in 2022 en de wereldwijde toename van conflicten lijkt dit een logische keuze: we willen ons kunnen verdedigen en investeren in veiligheid. Maar is bewapening de enige weg naar veiligheid? Nog niet zo lang geleden volgde Europa een heel andere koers. Na het einde van de Koude Oorlog daalden de defensiebudgetten, werden chemische wapens vernietigd en groeide het geloof in diplomatie, internationale samenwerking en vreedzaam conflictbeheer. Inmiddels kiest Europa opnieuw voor bewapening: er komen nieuwe gevechtsvliegtuigen en drones, de herinvoering van de dienstplicht staat ter discussie en jongeren melden zich aan als reservist. Is dit uitsluitend het gevolg van de dreiging vanuit Rusland? Hoe ziet de herbewapening van Europa eruit? En wat zijn argumenten voor pacifisme?
In dit Kenniscafé wordt de remilitarisering vanuit verschillende perspectieven onderzocht. Moderator Jelte Posthumus spreekt onder andere met hoogleraar Internationaal Recht Marcel Brus over de complexiteit van oorlogsrecht in hybride oorlogsvoering, zoals cyberaanvallen, desinformatie of proxy wars. Ook schuift universitair docent Militaire Geschiedenis Kim Bootsma aan, die de geschiedenis van dienstplicht in Europa toelicht en onder meer bespreekt wat deze remilitarisering betekent voor de bevordering van gendergelijkheid in het leger. Bovendien licht Willem de Haan, socioloog, journalist en betrokken bij de Nieuwe Vredesbeweging, toe waarom hij oorlog de meest primitieve manier van conflictoplossing vindt. Onlangs verscheen van De Haan Vrede als daad, een pleidooi voor vrede in tijden van oorlog. In het Kenniscafé wordt elke maand gepraat met Groningse wetenschappers, onderzoekers en andere experts over actuele thema’s. Het Kenniscafé wordt georganiseerd i.s.m. Science LinX en Forum Groningen en wordt ondersteund door het Akkoord van Groningen.
Links:
Tot de tanden toe bewapenen
Amsterdamse tieners over de militaire dienstplicht ‘Zorg is essentiëler dan defensie’

Dark Matter Day 2025
2025-10-31
On and around October 31st, the world will celebrate the historic hunt for the unseen—something that scientists refer to as dark matter.
Since 2017, more than 350 global, regional, and local events have been held on and around October 31 by institutions and individuals looking to engage the public in discussions about what we already know about dark matter and the many experiments seeking to solve its mysteries. Scientists believe that dark matter, which we have so far only detected through its gravity-based effects in space, makes up about a quarter (26.8 percent) of the total mass and energy of the universe, and something that is driving the universe’s accelerating expansion—which scientists call dark energy—accounts for another 68.3 percent. The ordinary matter, like stars and planets and galaxies, makes up just 4.9 percent of the total mass and energy of the universe.
Links:
Dark Matter Day
Discover the Mysteries of the Universe and the Brain
