news
Environment
Results 81 - 100 of 981.
Environment - 19.01.2024
More clutter for more biodiversity
It may look chaotic, but deadwood in the forest does have a function. It has a decisive influence on biodiversity. Researcher Elena Haeler has shown in a study that not only the quantity but also the distribution of deadwood in the habitat plays an important role . Until now, research into deadwood has mainly focused on the amount of wood present.
Computer Science - Environment - 16.01.2024
AI program classifies objects in satellite images faster
An AI program can train neural networks, using just a handful of images, to rapidly characterize in satellite and drone data new objects like ocean debris, deforestation zones, urban areas and more. Images taken by drones and satellites give scientists a wealth of information. These snapshots provide crucial insight into the changes taking place on the Earth's surface, such as in animal populations, vegetation, debris floating on the ocean surface and glacier coverage.
Environment - Life Sciences - 15.01.2024
Monitoring of genetic diversity is insufficient
Genetic diversity plays a critical role in enabling species to adapt to climate change. An international study, jointly conducted with the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), indicates that ongoing endeavors to monitor genetic diversity in Europe are inadequate and incomplete.
Environment - 15.01.2024
Brumadinho dam collapse: The danger emerged after the decommissioning
In 2019, the tailings dam at a Brazilian iron ore mine failed. The mudslide caused a catastrophe for people and the environment. A team of researchers at ETH Zurich has now uncovered the physical mechanism that may have triggered the accident. The disaster near the small town of Brumadinho in southeastern Brazil occurred shortly after midday: on 25 January 2019, at a nearby iron ore mine, the tailings dam - a storage area for the sludgy, fine-grained residues from ore processing, or "tailings" - collapsed.
Environment - Chemistry - 12.01.2024
Capturing greenhouse gases with the help of light
Researchers at ETH Zurich are developing a new method to remove CO2 from the atmosphere. It involves molecules that become acidic when exposed to light. Their new process requires much less energy than conventional technologies. If we want to slow down global warming, we need to drastically reduce greenhouse gas emissions.
Environment - 08.01.2024
Building more to reduce emissions
The construction industry as a CO2 sink? Researchers at Empa's Concrete & Asphalt lab are working on this. By incorporating biochar into concrete, they are exploring the potential of CO2-neutral or even CO2-negative concrete. For optimal applicability, they process the biochar into pellets and use them to replace conventional aggregates.
Life Sciences - Environment - 29.12.2023
Warrior and nurse ants
Matabele ants are able to detect and treat infected wounds in their fellow ants. The work carried out at the University of Lausanne's Department of Ecology and Evolution on this African species is the subject of a publication in "Nature Communications" and a documentary.
Paleontology - Environment - 21.12.2023
A long-known deposit yields new secrets
Paleontologists lack the fossils they need to trace the evolutionary history of the Amazon region, a region characterized by unparalleled biodiversity. By exploiting data from a site known for over a century, Juan Carrillo, a researcher at the University of Fribourg, and his colleagues from other institutions, have made exceptional discoveries that shed new light on this little-known past .
Environment - Earth Sciences - 20.12.2023
Permafrost: a ticking time bomb beneath our feet
Nearly a quarter of the Earth's land surface is permanently frozen. These areas, known as permafrost, are found in northern polar regions and at high altitudes.
Environment - Astronomy / Space - 14.12.2023
Accurate snow measurement thanks to AI and satellites
Snow measurement has never been so fast and accurate: researchers have developed an artificial intelligence capable of determining snow depth across Switzerland using satellite images. How much snow is there up in the mountains, and where exactly is it? The answer is of just as much interest to the winter tourism industry and operators of hydropower plants as it is to winter sport enthusiasts looking to gauge the risk of avalanches.
Environment - Earth Sciences - 12.12.2023
Heavy metals in the rivers of Greenland
Field studies by Eawag researcher David Janssen in southern Greenland show that the heavy metals in the rivers are largely of natural origin, and that the influence of mining and agriculture is negligible, at least during the period observed. The rivers in Greenland can transport unusually high concentrations of heavy metals, including copper, zinc, gold, silver, platinum, lead and mercury.
Materials Science - Environment - 01.12.2023
Replicating the structure of bird feathers
Modelled on nature: researchers have developed a new material that replicates the structure responsible for the blue feathers of the North American song bird, among many other birds. It also has other striking advantages. The eastern bluebird is a special bird. The blue of its feathers is unique. However, this colour is not based on pigments but on the special structure of the feather.
Environment - 30.11.2023
Treat wastewater in an environmentally sustainable way with worms
This research project explores vermifiltration as an alternative method for wastewater treatment. The aim is to fill knowledge gaps about greenhouse gas emissions, scaling-up, long-term operation, micropollutant abatement and treated wastewater reuse options. Vermifiltration is a non-sewered sanitation technology that uses a symbiotic relationship between Eisenia Fetida earthworms and microorganisms to treat wastewater.
Agronomy / Food Science - Environment - 30.11.2023
Inoculation Against Diseased Fields
Plant Biology Farmland often harbors a multitude of pathogens which attack plants and reduce yields. A Swiss research team has now shown that inoculating the soil with mycorrhizal fungi can help maintain or even improve yields without the use of additional fertilizers or pesticides. In a large-scale field trial, plant yield increased by up to 40 percent.
Environment - Psychology - 30.11.2023
Climate: why disinformation is so persistent
A team from the University of Geneva has tested six psychological interventions to combat climate misinformation. It shows how difficult it is to combat these messages, which are resistant to scientific information. Melting of glaciers, rising sea levels, extreme heat waves: the consequences of climate change are more visible than ever, and the scientific community has confirmed that humans are responsible.
Environment - Social Sciences - 29.11.2023
Small apartments have potential in Switzerland
There is a high level of interest in small forms of housing among the Swiss population. However, there are clear differences between those who already live or have lived in such a form of housing and those who can imagine doing so in principle. These are the findings of a study conducted by Lucerne University of Applied Sciences and Arts.
Environment - 29.11.2023
Experts revive ancient techniques to make concrete more sustainable
A team of experts from EPFL, ETH Zurich and a Geneva-based architecture firm has developed a new type of non-reinforced concrete made from stone offcuts. Their method, which reduces the use of carbon-intensive cement-based binders, draws on ancient techniques uncovered in historical archives. Some walls could easily be built without reinforced concrete, a material that accounts for a large share of the construction industry's carbon footprint.
Environment - Life Sciences - 28.11.2023
Protection of Highly Threatened Sharks and Rays Inadequate
Paleontology Sharks, rays and skates are the ocean's most threatened vertebrate group. Research led by the University of Zurich into their functional diversity has now revealed previously overlooked, critical conservation priorities, thereby underscoring the urgent need for targeted action to safeguard the threatened species.
Life Sciences - Environment - 24.11.2023
How plants determine where light comes from
With no visual organs, how can a plant know where light is coming from? In an original study combining biological and engineering expertise, the team led by Prof. Christian Fankhauser at the University of Lausanne, in collaboration with colleagues at EPFL, has deciphered a novel mechanism using the interface between air and water to generate a gradient of light "visible" to the plant.
Environment - Life Sciences - 23.11.2023
Scientists explore hidden dynamics in peat under mosses and shrubs
Global warming is causing extensive changes to peatland vegetation in Europe and Western Siberia, with consequences for soil composition and the peatlands' ability to sequester carbon. An EPFL-led study has examined the mechanisms behind these complex processes. Peatlands are significant carbon sinks, meaning they're potential time bombs when it comes to greenhouse gas emissions.