It can take years to notice the effects of changes in nature. Long-term research is therefore essential. If there are far fewer great tits or winter moths in a year, is that an exception or a new trend due to climate change? The long haul needed to measure this year-on-year is a big challenge. The National Institute for Ecological Research NIOO-KNAW, which celebrates its 70th anniversary this month, does this kind of research. What does it teach us?

Spring has started in the Netherlands, and that means our soil life is very active again. How much do we know of the creatures living under our feet? That is where the citizen science project of the Soil Animal Days comes in. What did the results of 2023 show us? Earthworms like wet weather and managed to retain their position in the national soil animals Top 3: they were spotted in 87% of gardens. And in Leeuwarden, people searched for soil animals with such enthusiasm and a clear focus on the importance of soil animals that the Frisian capital may proudly call itself Soil Animal City of the Year.