Panoramic view of the Zeppelin observatory, with me standing at the platform. Photo: Tamara Worzewski.

A quest for glowing particles inside Arctic clouds

It was 4 AM in mid-June 2019 when I met my supervisor Paul in the lab. We were going to an island in the Arctic. Amongst our luggage was a home-printer sized black box labelled ‘bioaerosol sensor’. A cab was called and we started our trip. A little more than half a day and 2 commercial flights later we were …

Local particulate emissions in Swedish cities account for the majority of premature deaths, according to a new PhD thesis by David Segersson. Photo: Henrik Ostrup

Cleaner air leads to longer lives

Measures to reduce air pollution between 1990 and 2015 in three major Swedish cities have led to an increase in average life expectancy at birth by up to one year, according to a recent PhD thesis from ACES. “While it has been widely known that exposure to harmful air pollutants is associated with adverse health effects, the health benefits associated with …

New method to filter out the microplastic effect

While research into the effects of microplastics has expanded greatly in the past decade, important questions about what concentrations are hazardous in water still remain unanswered. Moreover, water contains naturally occurring suspended particles, such as clay, that are of the same size as microplastic and may be equally harmful to aquatic life when present at high concentrations. With that in …

Stockholm ranked among world’s top 50 Student Cities

Which is the best student city in the world? Stockholm is ranked 37th based on QS Best Student Cities 2019.  Published annually, the ranking show the best urban destinations for international students based on different indicators grouped into categories like University Rankings, Student Mix, Desirability, Employer Activity, Affordability and Student View. This year’s ranking is topped by London and followed …

RV Sonne, Credit: University of Hamburg / LDF/J.Peters

Where do microplastics go in the world’s oceans? ACES students in search for answers in Pacific marine snow

Microplastics are small (less than 5 mm) pieces of plastic litter. They mainly originate from the breakdown of plastic debris in rivers and seas, but are also flushed out from other sources such as personal hygiene products that contain microbeads. Once in the ocean, the fate of microplastics is largely unknown. To address that question, PhD students Zandra Gerdes and Sophia …

ACES scientists involved in large research grant for developing green chemistry

The Swedish financier Mistra and industry partners are collectively investing SEK 100 million in the four-year research program SAFECHEM, which aims to create a sustainable chemicals industry and reduce exposure to hazardous substances. Of all the applicants involved, Stockholm University has been awarded the largest sum, approximately SEK 30 million. Within the framework of SAFECHEM, Stockholm University, together with Stockholm …

Stockholm University ranks 30 in the world in environmental studies

Stockholm University ranks 30th in environmental studies and 191st overall, according to the QS World University Ranking 2020 published on June 19th.  The QS World University Ranking is regarded as one of the most prestigious ranking lists in the world of higher education. This year’s edition includes over 1 500 institutions from 85 different countries. Stockholm University holds place 191, …

Fluorochemicals are extensively used for their water- and stain repellency.

From surfer shorts to surgical drapes: New framework to reduce harmful chemicals like PFAS added to consumer goods, phase out non-essentials

Human exposure to unnecessary and potentially harmful chemicals could be greatly reduced if manufacturers add chemicals only when they are truly essential in terms of health, safety and functioning of society. That’s the conclusion of a study published in Environmental Science: Processes & Impacts. In this study, researchers propose a framework based on the concept of “essential use” to determine …

A month in one of the world’s most polluted megacities – a scientist’s story

Delhi is like nowhere I’ve been before. The streets burst with people and noise and life. Clothes are brighter than elsewhere; the smells are stronger and deeper and ever changing. The food has more flavour. The soundscape – people shouting, car horns honking and the general background din – is completely unrelenting. It’s an onslaught to the senses. Traffic flows …

Risk assessment of new chemicals by EU is not transparent enough say ACES researchers

REACH is considered by many to be the best chemicals legislation in the world. But the high demands on the producers and importers are ineffective if the data they submit to the European Chemicals Agency is not being examined. In a new policy brief, researchers at ACES call for greater transparency and better control within REACH. The European chemicals legislation …

Antifouling paints used on leisure boats are sources of contaminants to the environment

The concentration of antifouling paints used on leisure boats exceeds safety values in both water, sediment and soil, shows a new PhD thesis from ACES. “My research shows that the use of antifouling paints pollutes the environment, not only when the boats are in the water but also when the hulls are subjected to maintenance activities on land. The results …

The Kolyma river in northeastern Siberia. Photo: Birgit Wild

Clues of carbon release from thawing permafrost found in Arctic rivers

Arctic rivers may hold vital clues to the accelerated release of carbon stored in Arctic permafrost, shows a new study by researchers from ACES published in the Proceedings of the National Academy of Sciences of the USA. “Rivers transport carbon from different sources in their catchments, including carbon mobilized from thawing permafrost or collapsing peat, as well as carbon from …

Contact information

Visiting addresses:

Geovetenskapens Hus,
Svante Arrhenius väg 8, Stockholm

Arrheniuslaboratoriet, Svante Arrhenius väg 16, Stockholm (Unit for Toxicological Chemistry)

Mailing address:
Department of Environmental Science
Stockholm University
106 91 Stockholm

Press enquiries should be directed to:

Stella Papadopoulou
Science Communicator
Phone +46 (0)8 674 70 11