Instead of lying in a drawer, your old mobile phone could help people on escape routes. The "Wir packen's an" association reveals how this works.

Deep Green uses waste heat from its data centres to heat swimming pools, reducing their carbon emissions and keeping them afloat as energy costs soar.

Fish live more safely in Utrecht thanks to a fish doorbell. The project not only helps fish on their migration paths, it also draws attention to the dangers of human infrastructure.

PolArctic, a start-up using modelling technology and artificial intelligence to create a digital twin of the Arctic, will map out existing climate impacts on the area – and predict new ones.

In the Klim app, farms can record their regenerative agricultural measures. In return, they get knowledge, a community and funds to support their work.