This article studies the securitization of immigration in the United States of America (U.S.), through the analysis of the National Security Strategies (NSS) published between 2002 and 2017, using a two-layered analytical framework that combines securitization theory and agenda setting theory.

On the 23rd of June Arianna Sacco successfully defended a doctoral thesis and graduated.

Streptomycetes are similar to moulds, but these bacteria live in the soil. They are very popular in biotechnology because they produce a great many antibiotics and enzymes. Gilles van Wezel will be using his Vici subsidy to study ways of increasing their production.

Adults are more likely to reoffend after a short prison sentence than comparable adults with a non-custodial sentence, Leiden University research shows. This is true for the likelihood and extent of repeat crime.

Tremendous amounts of data are generated in scientific research each day. Most of this data has more potential than we are using now, says Katy Wolstencroft, assistant professor in bioinformatics and computer science. We just need to integrate and manage it better.

Policy plans state that children should be placed in secure youth care less often and for shorter periods. But this is problematic in practice.

Bringing research and teaching closer together is part of the mission of Leiden University. The 'Career Policy for Academic Staff' working group that has draw up new guidelines for appointing academic staff discovered that the University has many members of staff who do not conduct research.

The trend of legal recognition for gay and lesbian couples is broadening. More and more rights are becoming available to same-sex partners – in more and more European countries. Leiden Law School and the French Institute for Demographic Studies publish detailed database and comparative analysis.

When do we say violence was used in an incident? The answer may seem obvious at first. But interim results from a study by Jolien van Breen show that Dutch people are labelling events in increasingly broad contexts as violent.

Academics who offer their books free online reach many more readers and are cited slightly more often. Surprisingly enough, it has little effect on the sale of paper editions, positive or negative. This is the conclusion of PhD candidate Ronald Snijder. PhD defence 29 January.

The Europa Instituut is pleased to announce that on 21 November 2016 a new handbook “EU State Aids” (31 Chapters, 1500 pages) was published.

We are launching more and more satellites and space is filling up as a result. Currently around 100 million pieces of space debris are floating around Earth. So who’s going to clear it up?

Leiden University is working on sustainability and should give its efforts more publicity. This is the conclusion of Industrial Ecology master’s students who investigated the extent to which Leiden University is green and sustainable.

More collaboration, combining data and asking the right questions. These are a few of the recommendations that policymakers and researchers formulated at the conference 'Data gedreven Beleidsontwikkeling' on 28 November 2017.

Leiden University now offers almost 20 Massive Online Open Courses (MOOCs). The enthusiasm displayed by participants makes it rewarding to develop and teach such courses, say MOOC lecturers Marlies Reinders and Edwin Bakker. But that is not all, ‘You bring together a global community.’

How do you keep students’ attention when you have to compete with digital distractions like Facebook? What skills do you need in today’s rapidly changing world? Teachers attended a congress on innovative teaching on 23 November.

More allowance should be made for differences between municipalities, argues Geerten Boogaard, Thorbecke Professor of Local Government. The Municipalities Act could, for instance, offer a ‘menu of options’ for the decision on whether to have an elected mayor. Professor Boogaard will deliver his inaugural…

In the Leiden Municipality Challenge, 25 students investigated how Leiden could become more sustainable. In doing so, they enlisted the help of the city's citizens. 'When citizens themselves participate in the research process, they have a better understanding of how science works.'

The Dutch Constitution is the second oldest constitution in the world after the US Constitution and it dates back to 1814. Wim Voermans, Professor of Constitutional and Administrative Law and author of the book ‘Our Constitution’ published earlier this year, advocates for a more accessible Constitut…

How do you make niche subjects interesting and accessible? Benjamin Suchard, historical linguist and researcher, seems to have created the perfect recipe, which consists of his various projects alongside his regular research, including a Twitter account and a major international film.

Dutch political parties have presented their own 'solutions' to make society 'safer'. How do the party positions compare with scientific research on crime reduction?

More attention should be paid to juvenile idiopathic arthritis. An early diagnosis and robust treatment can prevent irreversible damage. This is what paediatric rheumatologist Rebecca ten Cate said in her inaugural lecture on Friday 22 November 2019.

The government could do more to improve its diversity, says Saniye Çelik. By hiring people from a variety of backgrounds, the government will be better able to handle issues together with its citizens. Employees will also feel more connected to the organisation. PhD defence 10 November.

Since the 1950s, the expenses in primary and higher education have grown towards each other. The costs per pupil in primary education rose, while the expenses decreased per student in scientific education. An article about this appeared in the NRC, with comments on the historical development of education…

Its idyllic setting and white sandy beaches have made the Maldives a hotspot for tourists. This provides an income but is a problem for the fragile natural environment. Students from various universities worked with the local people to make the soil more fertile. How did they go about it?

How can a society protect itself from cyber threats? Sixty talented young researchers and professionals are learning more about this at the International Cyber Security Summer School in The Hague.

Every year the Leiden Centre for Science and Technology Studies publishes the Leiden Ranking, a league table of universities based on the quality of their academic education. But the data can be used for many different purposes, deputy-director Ludo Waltman explains.

One of the ambitions of the Learning@LeidenUniversity vision on teaching and learning is to foster an international and inclusive educational community in which everyone feels welcome, regardless of religion, sex, sexual orientation or cultural background. One student service that promotes inclusion…

10 October is the Day of Sustainability. What is the current status of sustainability at Leiden University? Things are moving ahead. Professor of Environmental Biology and Dean of the Faculty of Science, Geert de Snoo, outlines a new prospect: biodiversity.

Sharing scientific data, transferring money, or sending other sensitive information online: with cryptography, applications make sure your data does not fall into the wrong hands. Mathematician Thomas Attema (CWI/TNO/Leiden University) helps with this. For his PhD research, he developed a new technique…

Language evolution, targeted drugs or archaeological interpretation. Researchers are making increasing use of supercomputers that can rapidly process large quantities of data. This is one reason why the University data centre will be extended and updated. ‘Datamining means we can get a better picture…

There are approximately 60 million skateboarders worldwide. And yet in the academic world, this culture is not always looked upon seriously. Visual anthropologist Sander Hölsgens believes that this has to change. Last summer his book 'Skateboarding in Seoul' and the accompanying film 'Reverberations'…

Tell the truth about sustainability, become climate neutral by 2025 and safeguard democracy within the University. These are, in short, the demands of a petition by University Rebellion, a subgroup of the Extinction Rebellion movement. On 19 November they visited all Dutch universities, including Le…

Human failures or faults in systems are certainly just as harmful as a targeted attack by hackers. That is what Leiden professor in cybersecurity Bibi van den Berg says in the Haarlems Dagblad. She states the recent huge disruptions at Schiphol are interesting examples.

A fragmented political landscape, permanent pressure from current affairs and an increasingly political civil service: our government faces many challenges. This makes it all the more difficult to make important decisions about pensions or the climate. Research and good education can help meet the challenges…

‘Children’s rights are somewhat of a poor relation’, says Professor of Law and Health Mirjam Sombroek-van Doorm. In her inaugural lecture, she will emphasise how more attention needs to be paid to children’s rights in current thinking on law and health.

Comparing terrorist attacks with falling off a step ladder is absurd, writes Jeanine de Roy van Zuijdewijn in NRC Handelsblad on 27 September 2017.

In line with tradition, the opening of the academic year will see the presentation of the LUS Teaching Prize to the University's best lecturer. Get to know the nominees. This week: Kim Beerden.

For a month long, the Senate Chamber of Leiden University was reserved for portraits of women. The work of art showing a hundred unique portraits of female professors has now been put into storage, but the board of the University is taking measures to promote the image of women in science.

The Ministry of Justice and Security and Leiden Law School are planning to collaborate on a more structural basis. This is the outcome of a meeting that took place at the Academy Building in Leiden on 19 October. Those present at the meeting included the Minister for Legal Protection, Franc Weerwind,…

Activities of Thalia Hoffman and Basma Hamdy

Afghans who came to the Netherlands in a hurry, refugees who were used as leverage by Belarus and boat refugees who tried to reach Europe in an increasingly desperate manner: the newspapers were once again filled with news about migrants. Today, on International Migrants Day, we talk to professor Marlou…

Rather than finger-wagging, the Netherlands has opted for pragmatism when it comes to human rights. That is what Minister of Foreign Affairs Stef Blok said in a lecture in the Academy Building on Human Rights Day on 10 December 2019.

Scientists have long been puzzled why it is easier to produce hydrogen from water in an acidic environment than in an alkaline environment. Marc Koper comes with an explanation: the reason is the electric field at the surface of the catalyst, which is larger in an alkaline environment, as he writes…

We have to do all we can to stop climate change. But: the Earth is more resilient than we thought. That is the surprising conclusion of an international team of ecologists and mathematicians, which included Leiden mathematician Arjen Doelman. The team discovered that ecosystems can still avoid tipping…

Archaeologist Victor Klinkenberg examined an old Assyrian settlement in Syria, near to the IS stronghold Raqqa. 'Social life was more important than military life.' PhD defence 27 October.

The number of victims of child abuse is estimated to be higher during the first lockdown compared with a period without a lockdown. This is mainly due to an increase in the number of victims of emotional neglect, including educational neglect and witnessing domestic abuse. Families with children about…

Register now for the World Press Freedom Conference 2020 digital edition (9 – 10 December 2020)!

In an attempt to retain employees and tackle shortages in the labour market, some employers are now prepared to go further in offering attractive employment benefits. Dutch news programme 'Nieuwsuur' has discovered that large international companies, like Uber, McKinsey, and Salesforce, are prepared…

For the first time ever, more women than men have been awarded PhDs at Leiden University. In 2019, 226 women defended their dissertations as opposed to 207 men. More women were also awarded a distinction: seven of the thirteen ‘cum laude’ distinctions were awarded to women.