93 search results for “light pollution” in the Staff website
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wildlife journalist to ecologist: PhD candidate researching light and noise pollution
Ecologist Sebastiaan Grosscurt became a successful wildlife journalist after graduating. But he decided to focus on science instead. He started his PhD research this year on the cumulative effect of light and noise pollution on animal behaviour.
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Sebastiaan Grosscurt
Science
s.grosscurt@cml.leidenuniv.nl | +31 71 527 2727
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Dani Crowley
Science
d.crowley@biology.leidenuniv.nl | +31 71 527 4759
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How light and noise pollution disrupt aquatic life
Fish populations in lakes and rivers have declined in recent decades. This is probably due to light and noise pollution. The Horizon Europe grant enables ecologist Hans Slabbekoorn to investigate this and improve the situation for migrating fish. In order to do so, a seven-metre-long swimming tunnel…
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Ecology PhD student wins Dutch award for investigative journalism
PhD student and research journalist Sebastiaan Grosscurt won a Tegel in May. In the data category, Grosscurt and his colleagues won the prestigious Dutch journalism award. 'For me, ecological research and journalism are two ways of achieving the same thing.'
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Personnel monitor Light 2021
The University believes it is important to provide you with a satisfying work environment. How do you feel about your career opportunities, the interaction with your colleagues and supervisors, and the work facilities at your disposal? We ask for your opinion via the personnel monitor. This survey guarantees…
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Cavities for light and sound
PhD defence
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Paul Vriend
Science
p.vriend@cml.leidenuniv.nl | +31 71 527 2727
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Lights out, stars on: Daan Roosegaarde on Seeing Stars Leiden
‘What if we switch off all the lights one evening? That idea crossed my mind from time to time. And when I mentioned it to a taxi driver one day, he said: “Oh, you mean: lights out, stars on!” That’s not completely true, of course, because the stars are always on, but his phrase summed up the idea n…
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Anagnostis Theodoropoulos
Science
a.theodoropoulos@biology.leidenuniv.nl | +31 71 527 4882
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Algorithms combat environmental pollution from ships
Did you know that algorithms can help with the prevention of air pollution and ships sinking in the sea? A team of Leiden University researchers have worked together with the Dutch Ministry of Infrastructure and Water Management to look in data-driven inspection of ships. In this interview, Gerrit Jan…
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Thijs Bosker
Science
t.bosker@cml.leidenuniv.nl | +31 71 527 4924
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How polluting buildings and machinery make rich countries ever richer
Rich countries are getting richer because of environmentally polluting (construction) investments from the past, largely at the expense of poor countries. This was shown by long-term economic and environmental data. 'The gap between poor and rich countries is widening.' Scientists from the Leiden Institute…
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How polluting are the clothes in your closet?
Cotton is the most widely used natural fibre for clothes. But how polluting are our jeans and shirts actually? Environmental scientist Laura Scherer coordinated an international research project on the impacts of cotton. ‘The purchases of consumers in Europe can contribute to water scarcity in China…
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Berent Baris
Science
b.t.baris@cml.leidenuniv.nl | +31 71 527 2727
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Liselotte Rambonnet
Science
l.rambonnet@biology.leidenuniv.nl | +31 715272 5082
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Superselective bonds light up
Rather than one key and one strong lock, biology often uses tens or hundreds of weaker links to bind parts together, such as cells membranes. This allows for selectivity and also reversibility: the binding can also be undone. Researchers first caught this phenomenon using spheres or colloids, and published…
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Can humans observe a single particle of light? (And what does that say about our brain?)
Hoping to learn something about the human brain, Leiden researchers are creating a setup to shoot single photons, particles of light, into someone’s eye. ‘The eye is a passageway to the brain.’
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‘All of Leiden will join in with the Seeing Stars experiment’
What will happen if the lights in a large part of the city are switched off? How many stars can you see without all that light pollution? This is what researchers, artists and the residents of Leiden are going to investigate during Seeing Stars Leiden on 25 September. ‘Leiden is the ideal place for…
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Wil Tamis
Science
tamis@cml.leidenuniv.nl | +31 71 527 2727
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Anjali Pandit
Science
a.pandit@chem.leidenuniv.nl | +31 71 527 4198
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Oana Georgiana Rus-Oswald
Faculteit der Sociale Wetenschappen
o.g.rus@fsw.leidenuniv.nl | +31 71 527 2727
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This is how physicists use light to build complex structures
Petr Steindl works on quantum dots in microcavities for his PhD research. He manipulates single-photons to create complex structures of light. Applications could include quantum communication and gates for quantum computers.
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Bacteria growing on light and air: a revolution for biotechnology?
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…
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Sylvestre Bonnet
Science
bonnet@chem.leidenuniv.nl | +31 71 527 4260
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Dust cloud from two colliding ice planets dims light of parent star
For the first time, an international group of astronomers have seen the heat glow of two ice giant planets colliding. They could also observe the resultant dust cloud move in front of the parent star several years later. Led by Leiden astronomer Matthew Kenworthy, they monitored the star's brightness…
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Combining art and science in the recovery of Ukraine
How wonderful would it be to use art, technology and science in Ukraine's recovery? Young Ukrainians currently residing in Poland get guidance to develop creative programmes and activities that can later be implemented. Leiden astronomers Pedro Russo and Kateryna Frantseva cooperate in the project.
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'One in five bacteria we tested were capable of breaking down plastic'
Leiden PhD candidate Jo-Anne Verschoor discovered that nearly twenty percent of the bacterial strains she studied could degrade plastic, though they needed some encouragement to do so. ‘Bacteria are just like people,’ says Verschoor. Her research was published in the journal Communications Biology,…
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Auke-Florian Hiemstra named Person of the Year
Auke-Florian Hiemstra is the Leidsch Dagblad Person of the Year 2022.
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‘When a student sees the light, that’s what fulfills me’
'Education has always been something I am very interested in,' says the passionate Michiel Hogerheijde. He was already chairman of the astronomy programme committee and has been teaching for many years. Since 1 October, he is also the new Programme Director of the astronomy bachelor. 'I really enjoy…
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Working together on the plastic problem: how to keep citizens engaged?
What motivates citizens to participate in a citizen science project on plastic pollution? And does that motivation change over time? Liselotte Rambonnet tried to answer these and other questions with her research on the Clean Rivers (‘Schone Rivieren’) project. Rambonnet is a PhD student at the Institute…
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The lifecycle of a cigarette filter
The university is launching a campaign to focus extra attention on our smoke-free university locations. The University is using aptly named cigarette barrels to try to show clearly just how many cigarette filters are being saved from the environment. How harmful are these cigarette filters to the e…
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Plastic in cigarette filters: why smoking is bad for the environment too
We all know smoking is bad for our health. But we might not have known that the cigarette filters that litter our streets also impact the environment. Esther Kentin is a lecturer at Leiden Law School. She is raising awareness of the University’s cigarette butt problem.
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ESOF session shines a light on the dark side of our universe
Cosmologists can measure with increasing precision how the universe is expanding and changing. This is producing unexpected results and causing cracks in our picture of the universe. At the ESOF session The Dark Side of our Mysterious Universe, cosmologists, astronomers and philosophers will discuss…
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Green light to build revolutionary new experiment at CERN to search for unknown particles
After many years of preparations, CERN has approved a groundbreaking new experiment: the Search for Hidden Particles (SHiP). Physicist Alexey Boyarsky was involved from the start. ‘We know there is physics that’s missing and we aim to find it.’
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Kilotonnes of 'recycled' Dutch plastic waste end up in the sea
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…
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Why do birds flock? Shedding light on collective motions in heterogeneous populations
Leiden physicists Alexandre Morin and Samadarshi Maity study self-organisation and flocking phenomena. They shed light on flocking, which helps to understand how it is possible that birds in a flock don't collide. With plastic microbeads, they create an experimental setup and they developed a mathematical…
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Leiden biologists find nanoplastics in developing heart
Nanoplastics can accumulate in developing hearts, according to a study by biologist Meiru Wang from Leiden University. Her research on chicken embryos sheds new light on how these tiny plastic particles pose a threat to our health.
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Canal Watch scoops communication prize
Canal Watch (De Grachtwacht), which has been cleaning canals since 2018, has received the Dutch Research Council (NWO) Communication Initiative Award.
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Leiden academics nominated for Person of the Year
Leiden academics Remco Breuker and Auke-Florian Hiemstra stand to win the title of Person of the Year.
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Zware metalen hebben slechte reputatie, maar genezen ook kanker
Veel mensen denken dat zware metalen giftig zijn en mens en natuur altijd schade aanbrengen. Dat beeld moet genuanceerd worden, vindt hoogleraar Sylvestre Bonnet.
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Lights in a Sea of Darkness
PhD defence
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It is not easy to simplify your research
Defending your PhD research in front of nearly 300 elementary school students: that was the challenge faced by PhD candidates Jo-Anne Verschoor and Marinka de Willigen during the VUURVLIEGEN competition organised by the Centrum JongerenCommunicatie Chemie (C3). After an exciting competition, the children…
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Control of early plant development by light quality
PhD defence
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in microcavities: From single spins to engineered quantum states of light
PhD defence
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Students work on bacterium that makes sustainable plastic
A group of biology students are working on a solution to the world’s plastics problem by getting bacteria to make biodegradable plastic.
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Smart data for sustainable agriculture: less hassle, more green
In supermarkets, consumers are drowning in a sea of sustainability labels. Confusing for them, but also farmers can't see the forest for the trees. Obtaining these labels demands an enormous amount of time and effort. Berent Baris is investigating ways to simplify this process, benefiting both farmers…
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Leiden research into corona waste ends up in New York Times
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…
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18 billion animals a year: they die, but never end up on our plate
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…
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Cod behave differently in noisy environment
Underwater noise from seismic surveys affects the behaviour of Atlantic cod. These are the results of research by Leiden biologists in collaboration with colleagues from Belgium. During such surveys the fish are less active than usual and their circadian rhythm is disrupted; soon after exposure they…