A new study published in Earth's Future introduces the eLTER Framework of Standard Observations (eLTER SO)—a structured, harmonized system designed to support consistent long-term environmental observation across Europe. The paper, "Achieving harmonized and integrated long-term environmental observation of essential ecosystem variables - The eLTER Framework of Standard Observations," explains how the eLTER Research Infrastructure (eLTER RI) is improving the comparability and coordination of environmental data across diverse ecosystems and research fields.