Archive News

August 28, 2025An international study conducted in Eawag's experimental ponds demonstrates how indirect ecological effects influence the evolution of species.

July 23, 2025Surprisingly little is known about the climate history of the greater Tibet-Himalaya region. However, this information is urgently needed to predict how climate change will alter the water cycle there. Information stored in the sediments of Tibet's Nam Co Lake should now allow new conclusions to be drawn. A video presents the project.

July 15, 2025By the end of the century, water temperatures in Swiss rivers will rise by up to 3.5 degrees if no action to protect the climate is taken. The rivers in the Alps are particularly affected. This is the conclusion reached by researchers from Eawag and the University of Basel in a research project funded by the FOEN.

July 2, 2025After water is diverted for hydropower, rivers are often left with very little streamflow for nature. A new report provides an overview.

July 1, 2025Microbial communities living deep underground in the groundwater of Lavey-les-Bains remain surprisingly stable throughout the year, even though the composition of the water changes seasonally. This is the finding of a study by Eawag researchers that contributes to a better understanding of geothermal systems and microbial life deep underground.

June 12, 2025Many bacteria produce a protein complex to inject poison in their neighbouring cells. This was previously thought to eliminate their competitors. But now researchers at Eawag and ETH Zurich have shown: The killer bacteria can act as biological predators that feed on their prey.

June 10, 2025A sudden drop in temperature in Lake Geneva over the Whitsun weekend is leaving swimmers feeling chilly: within a few days, the surface water temperature near the city of Geneva fell by around 8 degrees. This is due to a natural phenomenon that can be observed impressively on the Alplakes platform.

May 21, 2025Tyre abrasion gets from the road into adjacent soils and affects soil organisms. A joint study by the Ecotox Centre, the aquatic research institute Eawag and the EPFL now shows that earthworms avoid soil that is heavily contaminated with tyre particles. However, the particles had no negative effects on the survival and reproduction of the animals.

May 13, 2025The year 2024 was very warm and very wet, especially in early summer. This led to a welcome replenishment of groundwater reservoirs and record hydropower production, but also to severe flooding. In Bern, the focus was on the further expansion of hydropower and the pollution of water resources by pesticides and the "eternal chemicals" PFAS.

May 9, 2025The diversity of whitefish species in Swiss lakes is unique and plays a central role in lake ecosystems. A comprehensive Eawag report now summarises the results of 150 years of research on these fish. They make it clear that the mechanisms and environmental conditions that have contributed to their development must be taken into account in order to preserve this species diversity. Last but not least, protecting whitefish diversity helps to preserve the natural yield potential of lakes as a source of food for humans.