Purpose: This paper aims to investigate the relationship between academia and society focusing on how technical universities perform Third Mission (TM) to promote knowledge outside the academic environment producing multiple benefits. Design/methodology/approach: This investigation is performed through the conceptual approach. The theoretical background of the TM is explored through scientific literature review. It analyses a selected pool of experiences focused on Environmental and Sustainable Education (ESE). The study identifies significant aspects of two specific case studies, designed and implemented by the authors. Findings: Outcomes show opportunities and limitations in the application of ESE on behalf of technical academia. The study suggests solutions, precautions and systemic changes to promote ESE for childhood as TM activity in technical engineering academia. These recommendations can be useful for policymakers to set academic goals and plan the strategic management of teaching, research and TM. Originality/value: The paper focuses on the role of technical engineering universities and criticalities faced by academics to foster and perform ESE. Future perspectives aim to create new opportunities to strengthen the social impact of scientific and technical research by building bridges with childhood education.