The Environmental Funders Network’s Environmental Impact Investing Group (EIIG) is a learning programme for trusts, foundations and individuals that offers online sessions, in-person Market Information Days and peer networking (with recorded resources), designed to help participants align investments with environmental mission; this reference is included in Part 2: The Purposeful Investment Landscape, Chapter “Exploring the Landscape,” because it provides practical educational content, real-world examples and peer-learning mechanisms that directly support readers learning about impact-investing tools, due diligence, governance and how to translate mission into financial decisions.