News
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Top 10 per cent of consumers cause trillions in environmental damageEnvironmental science 19 June 2026Those who consume the most also cause the most damage. The 10 per cent of the world’s population who consume the most cause up to $5.7 trillion in env...
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The ocean is changing faster than the rules that govern itInterview 08 June 20268 June is World Oceans Day, and the UN wants to ‘reimagine’ a new relationship with the ocean. But how does that work when reality changes so fast? We...
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How can we push back Earth Overshoot Day?Sustainability 05 June 2026Earth Overshoot Day, the day on which humanity has used all the natural resources that the Earth can regenerate in a single year, falls on 30 July thi...
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UN vote on climate change does not change the law, but will affect the courtroomInterview 29 May 2026A clear majority in the UN confirmed that states are obliged to combat climate change. 141 countries voted in favour, 8 against, including the US, Rus...
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What can universities learn from their ties with the tobacco industry?Fossil Fuel Ties 28 May 2026Researchers from Leiden University and Solid Sustainability Research have published a new study in PLOS Climate on the links between Dutch universitie...
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How should we measure progress? Rutger Hoekstra nominated for prestigious Frontiers Planet PrizeSustainability 22 April 2026Well-being economist Rutger Hoekstra has been named as one of the 26 National Champions of the international Frontiers Planet Prize. He is receiving t...
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Ammonia as a clean fuel: ‘Do not create a new nitrogen problem’20 April 2026Ammonia has been feeding the world for decades as a fertiliser and is now rapidly emerging as a carbon free fuel for shipping and industry. But if we ...
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How sustainable is the new Dutch ‘Schijf van Vijf’ Five questions for environmental scientist Joran LammersEnvironmental sciences 14 April 2026The ‘Schijf van Vijf’ is the Dutch official dietary guideline, similar to a food pyramid, that shows what a healthy daily diet looks like. The updated...
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Grant for research into fungus that could make vegan cheese cheaper and more sustainable07 April 2026Leiden researchers and partners have been awarded a 1.3-million-euro grant to produce milk protein for vegan cheese using fungi. While this process is...
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Turnips from Amsterdam? How rooftop gardens can strengthen the food supply chainGreen roofs 02 April 2026‘Darling, fetch some broccoli from the roof, would you?’ This could be a reality in the future. Ecologist Pengxuan Xie investigated whether rooftop fa...
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Noise at sea: research on how wind farms affect fishBiology 09 March 2026Human activity is making the underwater world increasingly noisy. PhD candidate Fien Demuynck researched how wind farms affect fish and how to minimis...
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Leiden research that matters: how science is shaping European pesticide policyChangemakers 03 March 2026Leiden ecotoxicologist Martina Vijver helped shake a European policy proposal in a single weekend. Not with a new experiment, but with years of resear...
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‘Teaching is like a professional sport: you always have to be switched on’Teacher of the Year awards 11 December 2025For a long time, Thijs Bosker was an average student, until he discovered how exciting learning becomes when there are no ready-made answers. To his s...
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How science informs policy: ‘As a researcher, my work only becomes truly relevant once it is used in society’IMPACT 11 December 2025Green cities and a well-protected food system: Roy Remme and Oliver Taherzadeh study ways to achieve these. But how can their scientific findings lead...
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Celebrating 20 years of Sino-Dutch environmental researchHIGH-LEVEL VISIT 27 November 2025Smarter construction, cleaner energy and greener cities: This week, we welcomed a high-level delegation at CML. A visit that marks 20 years of Sino-Du...