ETH News

Renovating buildings to improve their energy efficiency is a crucial step towards Switzerland achieving its climate targets. ETH Zurich researchers can now reveal the most effective renovation strategies for reducing greenhouse gas emissions: replace fossil-fuel heating systems and harness the potential of bio-based building materials like straw and hemp.

Recycling is an accepted formula for sustainable resource use, but in the case of plastic it can have serious side effects, says Helene Wiesinger ¨C and uses the example of plastic flooring in Switzerland to illustrate the dilemma.

A global study shows that the world¡¯s groundwater resources are dwindling: levels are falling sharply worldwide, and the decline has accelerated in the 21st century. Nevertheless, there is still reason for hope.

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.

Studying at ETH Zurich is challenging, and all students have their personal hurdles to overcome. This video series shows personal portraits of ETH students.

ETH students are mapping the groundwater in an area of forest near Bern. This fieldwork will give them the skills they need for a career in environmental engineering.

Sewer systems and centralised treatment plants are not a sustainable solution for managing the world¡¯s wastewater. Environmental engineers at ETH Zurich and Eawag have been helping to develop decentralised, closed-loop modular systems.

Trichodesmium, a common and ecologically important bacterium, fertilises nutrient-poor regions of the oceans and thereby enables higher life. Crucial to its success is its ability to form aggregates in order to react quickly to changes in its environment. ETH Zurich researchers have shown how the microbes organise themselves in this process.

When microorganisms break down organic material in the soil, they actively release CO₂ into the atmosphere. This process is called heterotrophic respiration. A novel model shows that these emissions could surge by up to 40 percent by the end of the century ¨C most significantly in the polar regions.

In the Forest Laboratory "Waldlabor" on H?nggerberg, ETH Zurich researchers investigate the storage and transport processes of water in the forest. Recently they showed that forest-floor litter and deadwood have a far larger influence on the forest water balance than expected.

A research collaboration led by ETH Zurich and MIT will receive a further USD 15 million from the New York-based Simons Foundation to investigate the behaviour of marine bacteria and microalgae. The research will focus on microbial communities that impact the ocean¡¯s carbon cycle.

Researchers at ETH Zurich and WSL have for the first time reconstructed the extent of Switzerland¡¯s glacier ice loss in the 20th century. For this purpose, the researchers used historical imagery and conclude that the country¡¯s glaciers lost half their volume between 1931 and 2016.