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At Père-Lachaise, what makes the cemetery a refuge for wildlifeGrasses, trees and nighttime tranquillity: Père-Lachaise is home to documented wildlife. But observing species is not enough to measure whether their numbers are growing.
House sparrow: why its chirping is becoming rarer in some citiesEurope lost around half of its house sparrows between 1980 and 2017. What do these figures really tell us, and how should we interpret the counts from Luxembourg gardens in 2020 and 2025?
Trees in the city: Luxembourg sets out its scheme for municipalitiesPresented to municipalities on 28 September, the urban tree canopy scheme combines greening with the streamlining of certain procedures. The aim is to view trees as a lasting component of urban planning.