Every major decision — from trade regulations and environmental monitoring to fuel distribution and consumer protection — depends on one critical factor: accurate measurement. Recognizing this essential role, the global metrology community is celebrating World Metrology Day 2026 under the theme “Metrology: Building Trust in Policy Making.” Observed annually on 20 May, World Metrology Day marks the anniversary of the signing of the Metre Convention in Paris in 1875, a histori

On 15 December 2025, UNESCO and the International Bureau of Weights and Measures (BIPM) signed a new Memorandum of Understanding (MoU), reinforcing their long-standing cooperation to advance metrology, capacity building in basic sciences, and the role of accurate measurement in sustainable development worldwide. The Memorandum was signed in Paris by Ms Lidia Brito, Assistant Director-General for Natural Sciences at UNESCO, and Mr Martin Milton, Director of the BIPM. It update