In this course, we critically examine gender in environment and development. We review the process of gender mainstreaming, we analyze its historical challenges, and we propose innovative frameworks to better address these challenges. Using case studies, we take on some of the most pressing environment and development issues including: food security, climate change. We critically examine males as allies to achieve gender equality. Furthermore, we apply our new knowledge to the field of environmental justice. This class is relevant to students and professionals working in education, research, programming and policy that want to deepen their understanding of gender and to acquire tools to address gender in environment and development.