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Results 61 - 80 of 464.


Environment - 08.05.2020
Restoring rivers and streams: Effective outcome evaluation
Restoring rivers and streams: Effective outcome evaluation
Canalisation, sewage disposal and hydropower exploitation - rivers are among the most heavily impacted ecosystems worldwide. At the same time, rivers and streams are highly dynamic systems of exceptional biological diversity and social importance. In this area of conflict between protection and exploitation, Switzerland will implement numerous restoration and mitigation projects in the coming decades.

Environment - Materials Science - 06.05.2020
Filtering out toxic chromium from water
EPFL chemists have developed sponges to capture various target substances, like gold, mercury and lead, dissolved in solution. The sponges are actually porous crystals called metal organic frameworks, and now one exists for capturing toxic hexavalent chromium from water. Hexavalent chromium continues to contaminate water sources around the world, with one US company fined just this February for having put employees at risk.

Environment - Materials Science - 06.05.2020
Going against the trend
Going against the trend
Global warming has affected the entire planet's surface, except for one particular area of the ocean, which has bucked the trend. A research team comprising scientists from ETH Zurich and Princeton University has unravelled the causes of this conundrum. Climate and marine scientists are observing pervasive warming of the ocean and the land surfaces across the globe.

Environment - Economics / Business - 05.05.2020
Long-term developments of energy pricing and consumption in industry
Long-term developments of energy pricing and consumption in industry
Researchers at the Paul Scherrer Institute PSI have collaborated with British economists to study how energy consumption by Swiss industry develops depending on energy pricing. To this end, they examined in particular the prices and consumption of both electricity and natural gas over the past decades.

Life Sciences - Environment - 05.05.2020
Bacterial behaviour influences cloud formation
Bacterial behaviour influences cloud formation
ETH researchers have analysed individual marine bacterial cells to show that metabolic processes inside them determine the amount of gas they release, which is involved in cloud formation. Meteorologists have known for almost 50 years that the proverbial flapping of a butterfly's wings can trigger a hurricane in a completely different location.

Life Sciences - Environment - 04.05.2020
Predators Help Prey Adapt to an Uncertain Future
Predators Help Prey Adapt to an Uncertain Future
What effect does extinction of species have on the evolution of surviving species' Evolutionary biologists have investigated this question by conducting a field experiment with a leaf galling fly and its predatory enemies. They found that losing its natural enemies could make it more difficult for the prey to adapt to future environments.

Health - Environment - 30.04.2020
Covid-19: using wastewater to track the pandemic
EPFL researchers, working in association with the Swiss Federal Institute of Aquatic Science and Technology (Eawag), have developed a method for detecting the novel coronavirus in wastewater samples. Their method has been tested successfully on samples collected during the first phase of the pandemic, paving the way to an early-stage warning system.

Health - Environment - 30.04.2020
Tracking the course of the pandemic in wastewater
Tracking the course of the pandemic in wastewater
"Detection and quantification of SARS-CoV-2 in wastewater" - research projects on this scale generally take several years. But now, thanks to major efforts, a group of scientists led by Professor Tamar Kohn (Environmental Chemistry Laboratory) at EPFL and Dr Christoph Ort (Urban Water Management) and Dr Tim Julian (Environmental Microbiology) at Eawag have shown that an idea like this can be realised within a matter of weeks.

Environment - 28.04.2020
Conversion product of painkiller more toxic than expected
Conversion product of painkiller more toxic than expected
Every day, several tons of pharmaceutical ingredients are released into bodies of water worldwide. These originate mainly from domestic wastewater, because most substances are excreted again after ingestion - in part unchanged. Since many wastewater treatment plants do not retain all substances without leaving any residues, the rest ends up in the aquatic environment.

Environment - Life Sciences - 27.04.2020
Dramatic Loss of Food Plants for Insects
Dramatic Loss of Food Plants for Insects
The diversity of food plants for insects in the canton of Zurich has dramatically decreased over the past 100 years or so.

Life Sciences - Environment - 27.04.2020
Rapid evolution in fish: genomic changes within a generation
Rapid evolution in fish: genomic changes within a generation
Researchers from Basel have identified the genetic basis of rapid adaptation using a native fish species. They compared threespine stickleback fish from different habitats in the Lake Constance region. Their study reveals that changes in the genome can be observed within a single generation. The results were published Communications.

Life Sciences - Environment - 23.04.2020
Following the insect meltdown, numbers of orb web spiders have drastically declined
Following the insect meltdown, numbers of orb web spiders have drastically declined
The abundance of large orb web spiders in the Swiss midland has declined drastically over the last 40 years. The main reason for this is the shrinking food supply available to these insectivorous animals. This is demonstrated in a study conducted by researchers from the University of Basel and Ghent University (Belgium), as reported in the scientific journal Insects.

Life Sciences - Environment - 21.04.2020
Pest Control with Genetically Modified Insects
Pest Control with Genetically Modified Insects
To control pests without pesticides, genetically modified organisms of the same species could be used. The latter carry a gene that is passed on with above-average frequency via sexual reproduction. This gene possesses traits that directly weaken the pest, or prevent pathogens from being transmitted.

Astronomy / Space Science - Environment - 16.04.2020
CHEOPS space telescope ready for scientific operation
CHEOPS space telescope ready for scientific operation
The CHEOPS space telescope has exceeded scientists' expectations for accuracy. CHEOPS has reached its next milestone: Following extensive tests in Earth's orbit, some of which the mission team was forced to carry out from home due to the coronavirus crisis, the space telescope has been declared ready for science.

Environment - Chemistry - 14.04.2020
Computer modelling deciphers the important role of the river-groundwater interface as a hot spot for arsenic release
Computer modelling deciphers the important role of the river-groundwater interface as a hot spot for arsenic release
Naturally occurring (geogenic) arsenic contamination in groundwater is a problem of global significance, with noteworthy occurrences in large parts of the alluvial and deltaic aquifers in South and Southeast Asia. Computer models are necessary to analyse field observations, to unravel which chemical and physical processes play a role, and to predict the behaviour of arsenic within aquifers - namely where and when pollution may occur in the future.

Environment - Earth Sciences - 14.04.2020
Cleaner air with geothermal energy
Cleaner air with geothermal energy
The use of dirty coal as a heat source makes life tough in the Mongolian winter. ETH geophysicists are helping to develop geothermal energy as a clean alternative. Many Europeans have an idyllic view of Mongolia as a land of wide, empty spaces and pristine nature. But the truth is more complicated, especially in winter.

Environment - Social Sciences - 14.04.2020
Evaluates the effects of the COVID-19 lockdown on well-being
A new nationwide study being conducted jointly by EPFL, the Idiap Research Institute and the University of Lausanne (UNIL) aims to understand the emotional effects of the lockdown on Swiss residents and what steps they are taking to cope with it. The findings will be used to develop better support strategies for the future.

Environment - 09.04.2020
Air pollution in times of corona
Air pollution in times of corona
The world stands still. People work at home, cars stay in garages, planes on the ground. Determining the amount of pollutants in our atmosphere is extremely exciting, especially in these times. Empa researchers are analyzing and evaluating the amounts of pollutants measured at stations throughout Switzerland.

Environment - 08.04.2020
Agriculture began in the Amazon 10'000 years ago
Agriculture began in the Amazon 10’000 years ago
As a new study shows, more than 10,000 years ago, people in the southwest of the Amazon began growing manioc and squash, 8,000 years earlier than previously thought. The area is thus one of the early Holocene centres of plant domestication in the world. People also changed the landscape by creating thousands of so-called forest islands.

Environment - 07.04.2020
Provision of adequate space for surface waters is essential
Provision of adequate space for surface waters is essential
A recent publication by Florian Altermatt, a research group leader at Eawag and Professor of Aquatic Ecology at the University of Zurich, began as an address to a gathering of legal experts.