The GBIF Ebbe Nielsen Challenge is an annual competition that seeks to inspire innovative applications of open-access biodiversity data. In 2023, the Challenge will award a total of €20 thousand for advancements in open science that feature tools and techniques that improve the access, usefulness and quality of open biodiversity data. The Challenge is open worldwide to individuals, teams of individuals, companies and their employees, and governmental agencies and their employees. The closing date for submissions is 22 August 2023. Ebbe Nielsen Challenge