The Royal Netherlands Academy of Arts and Sciences (KNAW) announced on 25 April that it has appointed 18 new members. These include Leiden professors Andrew Webb and Jos Raaijmakers.

Skilful watercolours by botanical painter Esmée Winkel, anatomical flower models and the odd stunning real orchid. In the Extraordinary Orchids exhibition at Oude UB, the Hortus botanicus shows us the wonderful world of the orchid.

The new book of Professor of Character evolution and biodiversity Menno Schilthuizen gained a lot of media attention. ‘Darwin comes to town – how the urban jungles drives evolution’ was published in English in February and will be available in Dutch soon.

A new plant species was named after Paul Kessler, prefect of the Leiden Hortus botanicus. Kessler discovered the small tree, which is related to the kiwifruit, himself.

Leiden Biology student Martienke Baaij received the annual award for being the best BSc-student in 2017 from the “Stichting Professor Dr. K. Bakker-fonds”.

At the start of the year a lot of journals publish lists of their most cited papers of the previous year. Three papers published by Leiden archaeologists were ranked in the top 10 of the Journal of Archaeological Science: reports.

Wouter Moerland is on a two-year secondment as ecology adviser at the Municipality of Leiden. This biology alumnus talks animatedly about his work. ‘We’re working hard to increase nature’s chances in town.’

A study of the International Union for Conservation of Nature has identified tree species native to Indonesia’s Kutai National Park that are resilient to climate change. The species support threatened East Bornean orang-utan populations; therefore, the study recommends their use in reforestation efforts.…

This abrupt climate change of 8200 years ago (the so-called 8.2k calBP climate event) has received wide attention among natural scientists, also because of today's rapid climate changes and their impact on our own society. The archaeological implications, however, have not been investigated so far.…

What happens to the different waste streams?

Herman Boerhaave (1668 - 1738) is generally known to have been a dedicated doctor and chemist. However, the significant role he played in botany is less well documented, according to Margreet Wesseling. So she decided to write about about Boerhaave the botanist to mark the 350th anniversary of his birth…

Leiden University is involved in five new NWO Gravitation projects. Two relate to mental disorder and the remaining three to a healthy lifestyle, the combination of human and artificial intelligence, and the special relationship between plants and microbes.

He started his career as a part-time PhD candidate and a reading volunteer at his children's school. Now, as a professor, he looks back on forty years of research and education: Peter Klinkhamer of the Institute of Biology Leiden, ecologist in heart and soul.

It is a warm day. The sun is shining brightly while biologist Marco Roos makes his way through the bushes towards a peculiar little plant. Insects buzz, birds chirp. In the background rises the LUMC: at the Bio Science Park in Leiden, people and nature come together in a special way.

Just about everything that's known about Charles Darwin has already been said or written. Even so, Norbert Peeters – together with Tessa van Dijk – has managed to write an original book about the great English scholar. In the run-up to Darwin Day (12 February) he tells us about his new book.

More severe droughts that will also last longer: this will primarily be a problem for irrigated croplands, as discovered by environmental scientist Qi Chen. Mixed forests with a variety of plant species will be the least vulnerable. Chen compared the effects of drought on different ecosystems across…

‘Working in Leiden is a dream come true.’ Ákos Kovács studied in his birth country Hungary and worked in Germany, Denmark and Groningen. As professor of Microbiome Ecology at IBL, he immediately started working together with his new colleagues to make discoveries about the versatile bacterial species…

The Institute of Biology Leiden has a new visiting professor as of the first of May. Bioinformatician Marnix Medema holds the Van der Klaauw chair for a year and looks forward to scientific collaborations and to boost the bioinformatics education.

The first Leiden Science Family Day on Saturday 6 October was a great success. During the ‘Weekend of Science’ more than 700 visitors, including 350 children, visited the Faculty of Science. With a program full of experiments, lectures, guided tours and demonstrations, visitors were given a glimpse…

Farmers do not love them all. Microbes can cause tragic consequences for crops. Even the presence of just one pathogenic fungus or bacterium can drastically reduce yields. Still, there are exceptions. In that case, a pathogenic microbe is present in the soil, but does not cause any harm. Adam Ossowicki…

The Leiden University Visual Ethnography collection has been added to Alexander Street Press, an educational streaming video service. The master’s specialization Visual Ethnography has supported many talented individuals to produce inspiring films. About 70 master’s thesis films of the past 8 years…

Iranian molecular plant biologist Salma Balazadeh started her career in Germany. Now she sets up a research group in Leiden to study stress in plants to secure global food supply. Her outlook on women in science in the context of the International Day for Women and Girls in Science, 11 February.

Is polder rice a feasible circular alternative for cows on peatland? A pilot experiment started this week. On May 22nd, researchers from Leiden University and Wageningen University & Research (WUR) planted roughly 3,000 rice plants on the Polderlab near Leiden. The researchers want to test rice as a…

On Monday the 8th of December, the annual symposium of the IBL will be organized at the main building of the LUMC Leiden. This year’s theme is “Integrative Biology towards Healthy Communities”.

What is the impact of humans on nature? In Science an article appeared in which researchers try to give an answer to that question. Biogeographer and postdoc at LUCL Sietze Norder is one of its authors.

Biology student Britt van Kasterop has received a Holland Society Young Talent Award for her excellent results in the first year of study. The online awards ceremony took place on 30 November.

The substance galanthamine from flower bulbs can fight symptoms of Alzheimer's disease. Nadeem Akram investigated how daffodils can optimally produce this natural remedy. PhD defence on 24 June.

Research to experiment with bacteria that grow like plants has been granted the NWO XS grant. These bacteria use light and carbon dioxide to grow, and will be designed especially for use in the biotechnological field. Tijn Delzenne and his supervisor Dennis Claessen can spend 50.000 euros on the exp…

On 1 March, Lennart Schada von Borzyskowski will start on a tenure track position at the Institute of Biology Leiden (IBL). With a focus on the natural and synthetic biochemistry of environmental bacteria, he wants to apply their features to health and sustainability issues.

Environmental researcher Paul Behrens generated both international as national media attention with his recent publication in Nature Energy. The media included Science Daily, Quartz and the Dutch financial newspaper Financieel Dagblad. In his publication, Behrens warns for possible power disruptions…

On Monday 21 September Annemarie Meijer, Professor of Immunobiology, presented her inaugural lecture on immunobiology and infectious disease.

On Wednesday the 4th of September, Queen Máxima opened the renovated tropical greenhouse complex of the Leiden Hortus Botanicus. At the occasion Máxima met with IBL-PhD student Mahin Ghorbani from Iran and talked with her about her work on drug discovery from Iranian medicinal plants using zebrafish…

The Royal Holland Society of Sciences and Humanities (KHMW) has appointed Jos Raaijmakers, professor of Microbial Interactions and diversity, as a new scientific member.

Masses of hamburgers, steaks, cheese and a lot of eggs: Americans love their animal products. But researcher Oliver Taherzadeh discovered that only a relatively small group of high-volume consumers need to modify their diet to achieve an enormous environmental gain.

What is Leiden University doing to reduce energy consumption and move away from fossil energy? Where can you find information about energy? And what changes can you make yourself?

In his leaving interview, Martijn Ridderbos doesn’t have to think long when asked what he is most proud of. ‘Bringing people together; creating things together. Reducing the gap between researchers and the staff who support them because the latter are essential. We’ve achieved that and the seeds have…

PhD defence

PhD defence

More than 80 percent of the EU’s agricultural subsidies go to the production of animals or animal feed. These products are responsible for 84 percent of the EU’s food-related greenhouse gas emissions. That is revealed in a new study by three Leiden researchers published in Nature Food. ‘If we continue…

Imagine that you need to travel, but you don’t have a car and you’re dead broke. What do you do? Hitchhiking, of course! Leiden biologists found that certain bacteria use this very same tactic: their spores hop on motile bacteria and use them as a taxi, ensuring they reach the right environment to f…

Alumna Esmée Winkel, scientific illustrator and botanical artist, has been awarded a gold medal by the British Royal Horticultural Society for a series of six watercolours.

Imagine: you are at the end of your fieldwork in Peru and ready to go home when all flights get canceled because of Covid-19. It happened to master student Visual Ethnography Mark Lindenberg. By now, four months later than scheduled, he is back in the Netherlands. How does he look back? And what was…

This summer seven students from the Faculty of Archaeology crossed the North Sea to assist in the British Museum excavations at East Farm, Barnham, Suffolk, UK – a Middle Pleistocene site. Together with five students from the UK they went through many stages of fieldwork, from scooping the English weather…

Emeritus Professor Ben Lugtenberg received ‘The Arima Award for Applied Microbiology’ from the IUMS (International Union of Microbial Societies) for his life-time contributions to this field.

On 16 January student Lisa Bruil from the Institute of Biology Leiden was awarded the annual prize from the Stichting Prof. dr. K. Bakker-Fonds for her outstanding results as BSc-student.

Leiden Biology student Amy Montanje received the annual award for being the best BSc-student in 2018 from the “Stichting Professor Dr. K. Bakker-fonds”.

Annemarie Meijer is appointed full Professor of Immunobiology. Meijer’s research focuses on immunobiology and infectious disease. She uses the zebrafish as a model for understanding mechanisms of host immune defense against intracellular bacterial pathogens.

A systematic approach to quantify impacts of food consumption on animal welfare has been developed by researchers of the Institute of Environmental Sciences, Leiden University in collaboration with ETH Zurich, and effective altruism organizations.

Photographing fluorescent flowers, searching for frogs and shooting tropical cucumbers out of trees: this is only a small part of the course Tropical Biodiversity and Field Methods. For this class, master’s students biology traveled to Malaysian Borneo for two weeks to gain experience in fieldwork.…

‘The climate crisis is the greatest threat we face,’ says Leiden University environmental scientist Paul Behrens. ‘And yet, there is hope. In the near future, I think we will wonder why we didn’t make these changes earlier.’