How Nuclear Science Uncovers the Story of Coffee

Source: International Atomic Energy Agency (IAEA) –

Did you know that every coffee bean holds a story? Using nuclear techniques, scientists can trace its journey — from the rain that nourished the plant to the soil that fed its roots. The IAEA, jointly with the Food and Agriculture Organization of the United Nations (FAO), supports countries to use these methods to ensure coffee quality and authenticity. Discover how the University of Costa Rica is building a geographic database for Tarrazú Coffee, helping laboratories worldwide verify its origins and protect its reputation.

This video was first published on 2 January 2025.

IAEA Launches New Outlook on Nuclear Power for Development in Africa at G20

Source: International Atomic Energy Agency (IAEA) –

A growing number of African countries are interested in adding nuclear to their energy mix, with Egypt building its first nuclear power plant and countries including Ghana and Kenya working with the IAEA to develop the requisite infrastructure to launch their programmes. The latest IAEA projections have nuclear capacity in Africa increasing tenfold by 2050 in the high case scenario, while even in the low case scenario the current figure grows by a factor of five.

The publication surveys the continent’s current energy landscape, highlighting the prospects for nuclear power to address the lack of electricity that is a daily reality for about half a billion people across Africa. The report also takes an in-depth look at what is required to deploy enough nuclear to meet the continent’s significant energy needs, underscoring the importance of addressing financing challenges, implementing strong, supportive government policies and adopting a regional approach to nuclear power development, and details IAEA support in these and other areas.

“Access to reliable and low-carbon energy sources such as nuclear can enable Africa to further explore and more importantly also add benefits and value to its vast natural resources, including uranium,” said Frederik Reitsma, Head of the IAEA’s Nuclear Power Technology Development Section. “History has shown that the development of a nuclear power programme, and the development of the associated supply chain, drives industrial growth and leads to advanced technology development in other areas.”

The publication also discusses how SMRs could play a major role in Africa, highlighting benefits such as their suitability for the relatively small electric grids that are common in Africa as well as lower capital costs. Uranium mining is also identified as a significant growth opportunity for the continent, which is already home to three of the world’s top ten uranium producers: Namibia, Niger and South Africa.

“As the Electric Power Research Institute (EPRI) contributes to the development of an energy security framework for G20 nations, insight-rich resources such as the IAEA’s Outlook for Nuclear Energy in Africa are essential to address regional resource expansion and inform development across continents,” said Emma Wong, Nuclear Principal Lead for Innovation, Quantum Technology and International Development at EPRI in remarks delivered during the launch event. “By together leveraging every resource at our disposal, we can amplify the value of global efforts to deliver the economic, environmental, and societal benefits of energy abundance to society.”

“The Clean Energy Ministerial (CEM) provides a trusted and inclusive platform where countries can engage in informed dialogue on the opportunities and challenges of nuclear energy, and advance practical cooperation aligned with their national priorities” said Jean-François Gagné, Head of the CEM Secretariat. “As a key international platform, the CEM supports governments in advancing their nuclear energy ambitions, including in emerging and developing economies. In Africa, the CEM NICE Future Initiative has actively worked with countries such as Ghana and Kenya, helping them explore the potential role of nuclear energy in their broader clean energy transitions. The CEM works in close partnership with the International Atomic Energy Agency (IAEA), fostering international collaboration and knowledge exchange in support of national and regional goals.”

Looking ahead, the IAEA is preparing to engage at the G20’s Energy Transitions Ministerial Meeting, scheduled for October in South Africa. The IAEA is currently developing a publication on the coal-to-nuclear transition which covers the economic benefits of converting former coal sites for nuclear power deployment and provides an overview of the technical aspects of the repurposing process. This report is set to be released just ahead of the meeting.    

Sri Lanka Makes Strides in Prevention and Care of Cervical Cancer

Source: International Atomic Energy Agency (IAEA) –

The imPACT review team spent a week in March 2025 gathering firsthand information about cancer services in Sri Lanka. (Photo: WHO Sri Lanka)  

An international review has found that Sri Lanka has made strides in cancer control in the past five years, boosting vaccination against the human papillomavirus (HPV) and cervical cancer screening, and expanding access to treatment services and palliative care. The country now plans to address a growing burden of oral cancers and to reinforce childhood cancer programmes as part of its upcoming health strategy.  

The imPACT review, concluded in March 2025, was carried out jointly by the IAEA, the World Health Organization (WHO) and the International Agency for Research on Cancer (IARC), with technical engagement from St. Jude Children’s Research Hospital and the MD Anderson Cancer Center in the United States of America.  

The review covered Sri Lanka’s capacities and progress in cancer management since a previous assessment in 2019, which laid the groundwork for the National Strategic Plan on Prevention and Control of Cancer (2020-2024).   

The 2025 review team comprised 17 international experts nominated by the three organizations. Evaluation areas, as identified by the Sri Lanka Ministry of Health, included prevention initiatives at the primary care level, early detection initiatives, cancer services at major hospitals, and oncology workforce capacities and needs.  

“We noted key areas of progress in the past five years across the continuum of care, including in prevention and access to treatment services,” said Arsen Juric, IAEA Programme Officer and imPACT review team leader. First dose HPV vaccination coverage surpassed 90% and cervical cancer screening exceeded 50% in 2022. Advancements were also made in clinical services, including the installation of new radiation therapy machines and the establishment of outpatient chemotherapy services. Palliative care consultation services are now available in 11 institutions, with 230 public health nursing officers providing palliative home care.  

“The recommendations from the review are timely and will help to inform the new National Strategic Plan on Cancer Control, set to take effect from 2025, as well as the National Health Strategic Master Plan 2026-2035,” said Asela Gunawardena, Director General of Health Services at Sri Lanka’s Ministry of Health and Mass Media. “The journey ahead is critical, as Sri Lanka works to combat a growing burden of cancer and to improve health outcomes for its population,” Gunawardena added.  

Tritium Level Far Below Japan’s Operational Limit in 14th Batch of ALPS-Treated Water, IAEA Confirms

Source: International Atomic Energy Agency (IAEA) –

Independent sampling and analysis conducted by the International Atomic Energy Agency (IAEA) have confirmed that the tritium concentration in the 14th batch of ALPS-treated water, which Tokyo Electric Power Company (TEPCO) began discharging today from the Fukushima Daiichi Nuclear Power Station (FDNPS), is far below Japan’s operational limit.

As part of its ongoing safety review, the IAEA collected and analyzed samples onsite of the diluted water that was being prepared for discharge as part of this latest batch. The results confirmed that the tritium concentration is far below the operational limit of 1,500 becquerels per litre and is in line with international safety standards.

Japan is releasing the ALPS-treated water in a series of batches over the next decades, following the start of the discharge in August 2023. The treated water is diluted with seawater prior to discharge. Of the approximately 101.000 cubic meters of water already released in the first 13 batches, the IAEA also confirmed that the tritium concentrations were far below the international safety standards and operational limits.

In a comprehensive report issued on 4 July 2023 before the discharge began, the IAEA’s safety review found that Japan’s plan for handling the treated water was consistent with international safety standards and that the release as planned would have a negligible radiological impact to people and the environment.

Reports on sampling, independent analysis, data evaluation, as well as timeline, are available on the IAEA website.

Update 308 – IAEA Director General Statement on Situation in Ukraine

Source: International Atomic Energy Agency (IAEA) –

The IAEA team at Ukraine’s Zaporizhzya Nuclear Power Plant (ZNPP) this morning heard several rounds of outgoing artillery fire coming from very near the site perimeter, the latest stark reminder of persistent nuclear safety dangers during the military conflict, Director General Rafael Mariano Grossi said.

The IAEA team members were conducting a walkdown at the ZNPP’s dry spent fuel storage facility when they heard artillery fire for just over an hour from around 10:40am local time.

“Indications of military activity taking place very close to this major nuclear power plant are deeply concerning. As I have repeatedly stated, maximum military restraint near nuclear power plants is a must in order to prevent the risk of a nuclear accident,” Director General Grossi said.

The latest incident came just a few days after the team was informed by the ZNPP of shelling taking place near the plant’s transportation department, located outside the site perimeter.

Further underlining the fragile nuclear safety and security situation, the IAEA team reported hearing military activities every day over the past week.

The site’s external power situation also remains extremely vulnerable, with the plant relying on a single off-site power line for three months now. Before the conflict, it had access to ten off-site lines for reactor cooling and other essential functions.

Over the past week, IAEA staff at the ZNPP conducted a walkdown of some of the site’s waterwork facilities. Access to the cooling pond isolation gate is still pending. The team is following up on the cooling water situation and its usage across the site.

At Ukraine’s operating nuclear power plants (NPPs) – Khmelnytskyy, Rivne and South Ukraine – three of their total of nine units remain in shutdown for refuelling and maintenance.

The IAEA teams at these NPPs and the Chornobyl site reported hearing air raid alarms nearly every day over the past week. At the Khmelnytskyy NPP, the team had to shelter three times.

How Isotopic Techniques are Helping Cities Secure Safe Drinking Water

Source: International Atomic Energy Agency (IAEA) –

The project’s findings are already making a difference in how cities manage their water. By identifying how water moves and changes within urban systems, cities can now plan and allocate resources more efficiently and respond more quickly to risks like drought, pollution, or overuse. 

“Understanding the seasonal shifts in our water sources has helped us better plan for dry periods and ensure consistent supply to our residents,” said German Esquivel-Hernandez, from the Water Resources Management Laboratory, Universidad Nacional, Heredia, Costa Rica. 

In Nepal, the findings have become part of everyday planning. “This project gave us the tools to trace where our water comes from and how it changes. That knowledge is now part of our daily decision-making,” said Bijay Man Shakya of the Center of Research for Environment, Energy and Water, Kathmandu. 

Similarly, in Slovenia, the project supported real-time improvements to urban water quality. “The isotope data helped us identify blending zones in our network and optimize treatment processes,” said Klara Zagar, Jozef Stefan Institute, Ljubljana. 

What is a Cyclotron?

Source: International Atomic Energy Agency (IAEA) –

How does a Cyclotron Work?

The process begins when charged particles like positive or negative ions are injected into the centre of the cyclotron, where they start to move outward in a spiral path.

Inside the cyclotron, are two hollow, D-shaped metal electrodes called ‘dees’, placed between the poles of a large magnet. The magnetic field forces the particles into a circular path, while an alternating electric field boosts the particle’s energy every time it crosses the gap between two dees. As the particles gain speed and energy, they continue to spiral outward.

Once the particles reach the outer edge of the cyclotron, they are directed toward a target. When the accelerated particles collide with the target, they can cause nuclear reactions, producing radioactive isotopes.

Nearly a century after their invention, cyclotrons remain in high demand because of their reliability, efficiency, and versatility.

While all particle accelerators share a common goal – boosting the energy of particles – they achieve this in different ways.

Cyclotrons accelerate particles in a spiral path using a constant magnetic field and an alternating electric field. The spiral design is one of the cyclotron’s main advantages. It allows for continuous acceleration in a relatively small space. As a result, cyclotrons are typically smaller, often room-sized, and more affordable than other accelerators. They can be installed in hospitals or university labs without needing massive facilities. Cyclotrons are also well-suited for producing specific types of radioactive isotopes needed in medical imaging and cancer treatment, and for other localized applications in research or industry.

In contrast, linear accelerators, or linacs, propel particles in a straight line using a series of electric fields. While linacs can be simpler in design, they often require much more space to achieve the same energy levels as a cyclotron. They are commonly used in radiotherapy, where precise targeted beams of radiation are used to treat tumours.

Another type of accelerator is the synchrotron – a much larger and more complex machine found in national research centres. Like cyclotrons, they guide particles in a circular path, but with variable magnetic fields and radiofrequency acceleration. These machines can reach extremely high energies, making them suitable for research in particle physics, materials science, and even drug development. However, due to their size and cost, they are typically used by national or international research centres, not hospitals or small labs.

Each plays an important role, but cyclotrons remain the most widely deployed and user-friendly accelerators for routine medical applications.

How are Cyclotrons used in Diagnosis and Treatment of Diseases?

Cyclotrons power many of the tools, treatments, and discoveries that improve our daily lives . They are compact, efficient, and relatively easy to operate, making them ideal for producing medical radioisotopes; unstable atoms that emit radiation and are used to diagnose and treat cancer.

One important consideration in radioisotope production is the effective lifespan of the isotopes – how long they remain radioactive and suitable for medical use after production.

Radioisotopes used in treatment generally have half-lives lasting a few days, which allows them to effectively kill cancer cells. They can also be transported from production sites to hospitals and treatment centres over this short time span.

In contrast, other diagnostic isotopes have extremely short half-lives, meaning they decay rapidly lose effectiveness within hours, and cannot travel long distances.

Cyclotrons are valued as they can produce isotopes onsite or nearby, ensuring patients receive fast, accurate diagnoses and timely treatment.

Medical Imaging

These scans help doctors detect diseases such as cancer, Alzheimer’s, and cardiovascular conditions such as heart disease at early stages with high accuracy. Early detection improves diagnosis and supports better treatment planning.

Cancer Treatment

Cyclotrons also help in treating cancer by producing special radioactive drugs used in targeted radionuclide therapy. In this type of treatment, radiation is delivered directly to cancer cells, which helps destroy them while minimizing damage to healthy tissue.

How are Cyclotrons used Today?

Cyclotrons play a vital role in modern infrastructure, healthcare and research.

Today, thousands of cyclotrons are in operation around the world, especially in hospitals, cancer centres and research facilities. As demand for non-invasive diagnostic tools like PET and SPECT scans grows, so does the need for cyclotrons and research facilities seeking to produce radioisotopes without uranium.

Before, many medical radioisotopes were produced in nuclear reactors using uranium, a process that can generate long-lived radioactive waste and raises safety and security concerns. To find cleaner and safer ways to produce these important materials, countries are turning to cyclotrons that can make radioisotopes without using uranium.

Newer generations of compact, low-energy cyclotrons make it possible for smaller hospitals and institutions to access the technology. Researchers continue to explore new uses of radioisotopes in environmental science, materials engineering and homeland security.

While the core principle behind the cyclotron has remained unchanged since the 1930s, this vital technology continues to evolve and adapt to the needs of the 21st century.

Regulating for a Safer Tomorrow: Alm-Lytz’s Path in Nuclear Safety

Source: International Atomic Energy Agency (IAEA) –

Alm-Lytz making radiation measurements at Loviisa nuclear power plant during outage inspection. (Photo: FORTUM) 

The IAEA profiles employees to provide insight into the variety of career paths that support the Agency’s mission of Atoms for Peace and Development and to inspire and encourage readers, particularly women, to pursue careers in STEM (science, technology, engineering and mathematics) or STEM-adjacent fields. Read more profiles of women at the IAEA.   

From a young age, Kirsi Alm-Lytz, now head of the IAEA Regulatory Activities Section, was fascinated by physics, and its ability to explain everything in our universe, from the motion of planets to the behaviour of particles. This passion for understanding the fundamental laws of nature eventually led her to a career in nuclear regulation, where she applies her knowledge and expertise to ensure the safe use of nuclear technology. 

“I remember when I was a kid, becoming an architect was once my dream, but as my interest in physics grew, it guided me towards finding my career in nuclear regulation,” said Alm-Lytz. “We grow up with visions of who we might become, but along the way, new paths unfold, sometimes unexpectedly, sometimes beautifully.”  

At just 24 years old, after she completed her Master of Science degree in engineering physics focusing on plasma physics and nuclear technologies Alm-Lytz undertook her first nuclear power plant outage inspection in Finland’s Loviisa nuclear powerplant, an experience that shaped her career.  

Intrigued by the nuclear field’s complexities, challenges, and immense potential, she started to wonder how she could contribute to nuclear safety regulation.  

Update 307 – IAEA Director General Statement on Situation in Ukraine

Source: International Atomic Energy Agency (IAEA) –

The IAEA team at Ukraine’s Zaporizhzhya Nuclear Power Plant (ZNPP) heard explosions and saw smoke coming from a nearby location where the plant said one of its auxiliary facilities was attacked today, Director General Rafael Mariano Grossi said.

The IAEA team was informed by the ZNPP that the facility was struck by shelling and drones from 9am, around the same time as the team could hear military activity.

The auxiliary facility is located 1,200 metres from the ZNPP’s site perimeter and the IAEA team could still see smoke from that direction in the afternoon.

It was the latest in a series of incidents in recent weeks and months further highlighting possible dangers to nuclear safety during the military conflict at the ZNPP.

“Any attack in the vicinity of a nuclear power plant – regardless of the intended target – poses potential risks also for nuclear safety and must be avoided. Once again, I call for maximum military restraint near nuclear facilities to prevent the continued risk of a nuclear accident,” Director General Grossi said.

Protecting Rhino – the Nuclear Way

Source: International Atomic Energy Agency (IAEA) –

In South Africa approximately one rhino is being killed for its horn every day.

A pioneering effort capitalising on the world’s nuclear security infrastructure is being rolled out this week to help prevent the illegal poaching and protect South Africa’s rhino.

The Rhisotope Project, supported by the IAEA, is safely inserting radioactive isotopes into rhino horns to deter poachers and stop smuggling by making the horns detectable at international borders. Watch this film to find out more.