news 2024

To achieve net zero, we need to reduce our CO2 emissions quickly and efficiently. An EU project involving Empa has selected Zurich as one of three pilot cities in Europe to accurately measure and model their carbon dioxide emissions. The findings will help cities to achieve their climate targets. Cities are the largest source of greenhouse gases in the world.

Plants and water can mitigate heat in cities. Using Zurich as a case study, researchers tested a climate model which indicates how large the effect of green and blue spaces is. The model supports urban planning and shows where improvements would be particularly effective. As a result of climate change, heatwaves are becoming more frequent - with particularly harmful effects on human health, livelihoods and infrastructure in cities.

Multi-storey timber buildings are extremely popular. To prevent them from being damaged by strong winds or earthquakes, sufficient bracing must be provided in the supporting structure. Computer calculations provide the basis for this. To check these in practice and improve the computer models, researchers use a two-ton "shaker".

Swiss cities are more likely to accept densification when densification projects provide affordable housing and green spaces compared to densification that is implemented through reduced regulations for housing construction. By prioritizing a socio-ecological densification, extensive planning procedures and delays might be minimized.

Renovating buildings to improve their energy efficiency is a crucial step towards Switzerland achieving its climate targets. 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.