Turning beer waste into a useful, sustainable product. That was the mission of students from Leiden at the international BISC-E event. The biology students challenged themselves and won third place in the Dutch finals of this competition. For this, they used the simple formula: Grain + fungus = coas…

On paper it is recycled, but in reality enormous quantities of plastic waste from the Netherlands end up in Asian seas. Researchers from the Leiden Institute of Environmental Sciences charted the fate of plastic food packaging waste from the Netherlands. They published their results on July 8 in the…

On Thursday 30 May, Leiden University hosts a workshop to foster collaborations to improve the governance of European textile waste export. Different stakeholders, including municipalities, associations of textile collectors and sorters, industry and consumers associations, are warmly invited to join…

Face masks and plastic gloves are supposed to protect us from corona, but they are becoming an increasing problem for the environment. In a special series of the New York Times, Leiden biologist Liselotte Rambonnet and alumnus Auke-Florian Hiemstra talk about their research and the special website they…

When professors become emeriti, it usually does not mean they stop working. The Centre for Linguistics (LUCL) will therefore soon have a first: a symposium is going to be organised where all the speakers are emeriti professors. 'Science will always be part of you are.'

The University has ambitious plans for reducing the environmental impact of its activities. To this end we have taken university-wide measures in the form of improved building sustainability, sustainable energy and water-saving measures. As an employee, you can also contribute to lowering the environmental…

We take our worn, torn and unwanted clothes to the clothing bank, assuming they will get a second chance. But what exactly happens with all those textiles?

Each year a staggering 18 billion chickens, turkeys, pigs, sheep, goats, and cows either die or are killed without making it onto someone's plate. Environmental scientists Juliane Klaura, Laura Scherer, and Gerard Breeman were the first to calculate this number on a global scale. 'Reducing these numbers…

Greenhouse gas emissions related to pharmaceutical consumption increased by 77 percent over the past 24 years, according to a Leiden University study published in The Lancet Planetary Health. Moreover, efficiency gains have stalled since 2008. ‘Our best option is reducing consumption and minimising…

The University has established an Environmental Policy Plan, which sets a number of ambitious goals to reduce its direct environmental impact and CO2 footprint and to raise staff awareness of sustainable and eco-friendly operations.

Leiden University ensures a pleasant and safe working environment, whether you are on campus or working from home. Here you will find practical information about accommodation and facilities, as well as answers to questions such as: How do I arrange an ergonomically responsible workplace at home? Where…

Countries that import plastic waste recycle an average of at least 63 percent of it. This is surprising, as we previously believed that the vast majority was incinerated or ended up as litter. This was discovered by PhD candidate Kai Li and his colleagues from the Institute of Environmental Sciences in…

Sustainable housing is one of the key pillars of the University’s environmental policy. Sustainable construction requires an additional investment of time and money. However, these costs can be earned back with lower energy costs, longer building usage, less maintenance, better performance by the staff…

Sustainable housing is one of the key pillars of the University’s environmental policy. Sustainable construction requires an additional investment of time and money. However, these costs can be earned back with lower energy costs, longer building usage, less maintenance, better performance by the staff…

PhD defence

FSW building, Wassenaarseweg 52, 2333 AK, Leiden

Facility, Organisation

Most people think of waste as something dirty that needs to be disposed of as soon as possible, but Olivia Yun-An Dung's dissertation aims to show that this does not always have to be the case. For this purpose, she focuses on Tzu Chi recycling in Taiwan. There, an army of elderly volunteers has been…

Halfway through his career alumnus Marc Tijhuis made a radical change: he left the corporate world to join the global battle against waste with the International Solid Waste Association.

Leiden University has taken seventh place in the UI Green Metric, a global sustainability ranking for universities. Almost 1,000 universities from all over the world participate in the ranking.

Canal Watch (De Grachtwacht), which has been cleaning canals since 2018, has received the Dutch Research Council (NWO) Communication Initiative Award.

Working in a laboratory is different from working in an office. Some of the rules that apply when working in or around a laboratory are given below.

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?

Biological agents are micro-organisms such as bacteria, parasites, moulds, viruses and their waste products. This category also includes genetically modified variants (GMOs). These agents may form a risk for your health, which is why we apply a number of legal and other guidelines to prevent people…

Where was that message again — in Teams, Outlook or in the chat? And where is that document? Somewhere on the J drive, or in a Teams channel? Needless searching wastes time and energy. By working together more efficiently in the cloud, you can keep track of everything, save time and collaborate more…

If you wish to find out about current construction projects, you will find an up-to-date overview of Leiden University construction projects below.

The year 2023 saw the earthquake in Turkey and Syria, the Wagner Group rebellion and wildfires and floods as all the weather records were smashed. Our most-read stories were about the climate crisis and the elections: here’s the list.

What looked like an ordinary coot’s nest turned out to be a five-star location with a remarkable backstory. Beneath a jetty on the Rokin in Amsterdam, biologist Auke-Florian Hiemstra discovered a true time capsule — complete with face masks from the COVID era and a Mars wrapper dating back to the 1994…