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Unlike their relatives, individuals of the poison frog Allobates femoralis are not poisonous but are captivating due to their different behavioral profiles: They successfully reproduce with different strategies depending on whether they are bold, aggressive or explorative. In addition, certain character traits are already present in this species at the tadpole stage.

A team from the University of Geneva has modelled projections for the spread of green energy at local level. Switzerland will have to step up its efforts to achieve zero net carbon emissions by 2050. How can we ensure that an energy policy will achieve its objectives? To find out, scientists and public authorities can rely on computer models of varying degrees of accuracy.

A team from the University of Geneva and Swiss TPH has published a large study covering more than a decade of data on the effects of mobile phones on semen quality of young men. Does electromagnetic radiation emitted by mobile phones affect semen quality? While various environmental and lifestyle factors have been proposed to explain the decline in semen quality observed over the last fifty years, the role of mobile phones has yet to be demonstrated.

The Douglas firs in Switzerland had a bad year: starting in mid-April 2023, foresters noticed conspicuously red-coloured needles. Investigations show that this is probably frost damage. Moreover, with the first discovery of invasive gall midges from North America in summer 2022, the list of Douglas fir pests has been extended further.

A major international study conducted mainly at the University of Neuchâtel (Switzerland) has revealed that the Apodera vas shell amoeba is found almost exclusively in regions originating from Gondwana, the supercontinent that gave rise to some of today's continents. The study also highlights the threat posed by global warming to the biodiversity of soil micro-organisms, of which this amoeba is one.

Sparkling water on the go at the touch of a button and entirely plastic-free. The new water bottle by ETH spin-off bottleplus makes this possible. by Nicole Davidson and Karin Kelly Like many other people, former ETH students Christian Käser and Linus Lingg love to drink sparkling water. There are dozens of convenient and well-designed reusable bottles for transporting tap water.

Researchers at EPFL and Northwestern University unveil a groundbreaking design for perovskite solar cells, creating one of the most stable PSCs with a power-conversion efficiency above 25%, paving the way for future commercialization. Perovskite solar cells (PSCs) stand at the forefront of solar energy innovation, and have drawn a lot of attention for their power-conversion efficiency and cost-effective manufacturing.

Turning unused waste from food production into clean energy: Researchers at ETH Zurich and Nanyang Technological University Singapore are using chicken feathers to make fuel cells more cost-effective and sustainable. The food industry generates enormous amounts of waste and by-products, including from poultry production.

They set out to study the Congo Basin's carbon cycle and in the process have become aware of one of the world's darkest blackwater rivers: the Ruki. In the first study on this major jungle river, an international research team led by ETH Zurich explains how this blackness comes about and what it says about the river system's carbon balance.

Scientists have developed an unprecedented simulation that allows the last 120,000 years of glacier evolution in the Alps to be visualized in 80 seconds.

To assess biodiversity goals, reports are typically based on entire countries. Researchers from the Global Mountain Biodiversity Assessment at the University of Bern and the University of Lausanne challenge this country-level analysis regarding conservation efforts for mountain biodiversity. They emphasize that significant sub-national differences are being overlooked and highlight the need for cross-country conservation initiatives.

After their production, which emits a lot of carbon dioxide, cement-based building materials such as concrete absorb the climate gas again - a process that takes decades and can hardly be controlled. What if it could be accelerated to protect the climate? researchers are collaborating with numerous partners in an elaborate project to find a solution that already takes place in the concrete production plant.

Alpine solar plants can produce up to four times as much electricity in the winter half-year as plants in the Central Plateau.

Without political measures for zero-emission technologies, a significant proportion of heavy goods vehicles will still run on diesel in 2035. This result is shown in a new ETH Zurich study on the decarbonisation of truck traffic. Without political incentives, heavy goods vehicles will probably continue to run on diesel in the future.

Professor Annegret Hannawa from USI Faculty of Communication, Culture and Society will conduct one of the sessions of the upcoming Arctic Circle Assembly in Reykjavík, Iceland. The conference is the largest annual international meeting on the Arctic, and over 700 speakers and more than 2000 participants from 60 countries are expected.

When it comes to feeding a growing population at a time of conflict and climate change, Mother Earth has a lot on her plate. To build a sustainable future we'll need to return to a farm-to-table model, and that's opening up vast and exciting avenues of research for scientists in an array of fields. In this special report , we explore some of the developments taking place in research labs and out on the farm.

Biodiversity is greatest in the tropics. That fact that it is hot and humid there plays an important role. However, climate alone cannot explain the global biodiversity patterns well. Researchers at the Swiss Federal Institute for Forest, Snow and Landscape Research have now tackled this old problem from a completely different angle - and identified a new, doubly important reason for high tropical diversity.

Through an innovative project in Sri Lanka, an EPFL researcher and a Sri Lankan researcher have demonstrated that construction practices in transition economies can operate more efficiently, sustainably and responsibly.

Although strict limits exist, batteries can still contain too many harmful ingredients such as mercury, cadmium and lead. The Federal Office for the Environment (FOEN) has therefore launched a control campaign. Empa has laid the foundations for this with a specially developed method for analyzing heavy metals .

Evolutionary Biology Artificial intelligence (AI) can help plant scientists collect and analyze unprecedented volumes of data, which would not be possible using conventional methods. Researchers at the University of Zurich (UZH) have now used big data, machine learning and field observations in the university's experimental garden to show how plants respond to changes in the environment.