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Only trees with sufficient water supply can cool cities
Urban trees are often seen as natural allies in fighting summer heat waves. But how much they actually help to cool their surroundings depends heavily on how moist the soil is. This is the main finding of a new study, led by environmental engineers at ETH Zurich and Eawag.
Light-controlled pore formation for better organoid growth
Researchers at ETH Zurich have developed a method for producing microporous hydrogels in which cells can grow in 3D. The new technique makes it possible to precisely control the tiny pores in the scaffolds.