The European Citizen Science Association aims to connect citizens and science through fostering active participation. Its mission is to encourage the growth of citizen science in Europe by mobilizing citizens to contribute to evidence-based sustainable development through citizen science projects. The association supports citizen science projects, interactions between groups and disciplines, and the participation of the general public. It also performs research on citizen science and shares best practices. Some focus areas of the association include projects, data, tools and technology; policy, strategy, governance and partnerships; learning and education; air quality; open science; bio blitzes; and global mosquito alert.